C spatial reference system services and defines. More...

#include <stdbool.h>
#include "ogr_core.h"

Classes
struct	OSRCRSInfo
	Structure given overall description of a CRS. More...

Macros
#define	SRS_WKT_WGS84_LAT_LONG
	WGS 84 geodetic (lat/long) WKT / EPSG:4326 with lat,long ordering.

#define	SRS_PT_ALBERS_CONIC_EQUAL_AREA "Albers_Conic_Equal_Area"
	Albers_Conic_Equal_Area projection.

#define	SRS_PT_AZIMUTHAL_EQUIDISTANT "Azimuthal_Equidistant"
	Azimuthal_Equidistant projection.

#define	SRS_PT_CASSINI_SOLDNER "Cassini_Soldner"
	Cassini_Soldner projection.

#define	SRS_PT_CYLINDRICAL_EQUAL_AREA "Cylindrical_Equal_Area"
	Cylindrical_Equal_Area projection.

#define	SRS_PT_BONNE "Bonne"
	Cylindrical_Equal_Area projection.

#define	SRS_PT_ECKERT_I "Eckert_I"
	Eckert_I projection.

#define	SRS_PT_ECKERT_II "Eckert_II"
	Eckert_II projection.

#define	SRS_PT_ECKERT_III "Eckert_III"
	Eckert_III projection.

#define	SRS_PT_ECKERT_IV "Eckert_IV"
	Eckert_IV projection.

#define	SRS_PT_ECKERT_V "Eckert_V"
	Eckert_V projection.

#define	SRS_PT_ECKERT_VI "Eckert_VI"
	Eckert_VI projection.

#define	SRS_PT_EQUIDISTANT_CONIC "Equidistant_Conic"
	Equidistant_Conic projection.

#define	SRS_PT_EQUIRECTANGULAR "Equirectangular"
	Equirectangular projection.

#define	SRS_PT_GALL_STEREOGRAPHIC "Gall_Stereographic"
	Gall_Stereographic projection.

#define	SRS_PT_GAUSSSCHREIBERTMERCATOR "Gauss_Schreiber_Transverse_Mercator"
	Gauss_Schreiber_Transverse_Mercator projection.

#define	SRS_PT_GEOSTATIONARY_SATELLITE "Geostationary_Satellite"
	Geostationary_Satellite projection.

#define	SRS_PT_GOODE_HOMOLOSINE "Goode_Homolosine"
	Goode_Homolosine projection.

#define	SRS_PT_IGH "Interrupted_Goode_Homolosine"
	Interrupted_Goode_Homolosine projection.

#define	SRS_PT_GNOMONIC "Gnomonic"
	Gnomonic projection.

#define	SRS_PT_HOTINE_OBLIQUE_MERCATOR_AZIMUTH_CENTER "Hotine_Oblique_Mercator_Azimuth_Center"
	Hotine_Oblique_Mercator_Azimuth_Center projection.

#define	SRS_PT_HOTINE_OBLIQUE_MERCATOR "Hotine_Oblique_Mercator"
	Hotine_Oblique_Mercator projection.

#define	SRS_PT_HOTINE_OBLIQUE_MERCATOR_TWO_POINT_NATURAL_ORIGIN "Hotine_Oblique_Mercator_Two_Point_Natural_Origin"
	Hotine_Oblique_Mercator_Two_Point_Natural_Origin projection.

#define	SRS_PT_LABORDE_OBLIQUE_MERCATOR "Laborde_Oblique_Mercator"
	Laborde_Oblique_Mercator projection.

#define	SRS_PT_LAMBERT_CONFORMAL_CONIC_1SP "Lambert_Conformal_Conic_1SP"
	Lambert_Conformal_Conic_1SP projection.

#define	SRS_PT_LAMBERT_CONFORMAL_CONIC_2SP "Lambert_Conformal_Conic_2SP"
	Lambert_Conformal_Conic_2SP projection.

#define	SRS_PT_LAMBERT_CONFORMAL_CONIC_2SP_BELGIUM "Lambert_Conformal_Conic_2SP_Belgium"
	Lambert_Conformal_Conic_2SP_Belgium projection.

#define	SRS_PT_LAMBERT_AZIMUTHAL_EQUAL_AREA "Lambert_Azimuthal_Equal_Area"
	Lambert_Azimuthal_Equal_Area projection.

#define	SRS_PT_MERCATOR_1SP "Mercator_1SP"
	Mercator_1SP projection.

#define	SRS_PT_MERCATOR_2SP "Mercator_2SP"
	Mercator_2SP projection.

#define	SRS_PT_MERCATOR_AUXILIARY_SPHERE "Mercator_Auxiliary_Sphere"
	Mercator_Auxiliary_Sphere is used used by ESRI to mean EPSG:3875.

#define	SRS_PT_MILLER_CYLINDRICAL "Miller_Cylindrical"
	Miller_Cylindrical projection.

#define	SRS_PT_MOLLWEIDE "Mollweide"
	Mollweide projection.

#define	SRS_PT_NEW_ZEALAND_MAP_GRID "New_Zealand_Map_Grid"
	New_Zealand_Map_Grid projection.

#define	SRS_PT_OBLIQUE_STEREOGRAPHIC "Oblique_Stereographic"
	Oblique_Stereographic projection.

#define	SRS_PT_ORTHOGRAPHIC "Orthographic"
	Orthographic projection.

#define	SRS_PT_POLAR_STEREOGRAPHIC "Polar_Stereographic"
	Polar_Stereographic projection.

#define	SRS_PT_POLYCONIC "Polyconic"
	Polyconic projection.

#define	SRS_PT_ROBINSON "Robinson"
	Robinson projection.

#define	SRS_PT_SINUSOIDAL "Sinusoidal"
	Sinusoidal projection.

#define	SRS_PT_STEREOGRAPHIC "Stereographic"
	Stereographic projection.

#define	SRS_PT_SWISS_OBLIQUE_CYLINDRICAL "Swiss_Oblique_Cylindrical"
	Swiss_Oblique_Cylindrical projection.

#define	SRS_PT_TRANSVERSE_MERCATOR "Transverse_Mercator"
	Transverse_Mercator projection.

#define	SRS_PT_TRANSVERSE_MERCATOR_SOUTH_ORIENTED "Transverse_Mercator_South_Orientated"
	Transverse_Mercator_South_Orientated projection.

#define	SRS_PT_TRANSVERSE_MERCATOR_MI_21 "Transverse_Mercator_MapInfo_21"
	Transverse_Mercator_MapInfo_21 projection.

#define	SRS_PT_TRANSVERSE_MERCATOR_MI_22 "Transverse_Mercator_MapInfo_22"
	Transverse_Mercator_MapInfo_22 projection.

#define	SRS_PT_TRANSVERSE_MERCATOR_MI_23 "Transverse_Mercator_MapInfo_23"
	Transverse_Mercator_MapInfo_23 projection.

#define	SRS_PT_TRANSVERSE_MERCATOR_MI_24 "Transverse_Mercator_MapInfo_24"
	Transverse_Mercator_MapInfo_24 projection.

#define	SRS_PT_TRANSVERSE_MERCATOR_MI_25 "Transverse_Mercator_MapInfo_25"
	Transverse_Mercator_MapInfo_25 projection.

#define	SRS_PT_TUNISIA_MINING_GRID "Tunisia_Mining_Grid"
	Tunisia_Mining_Grid projection.

#define	SRS_PT_TWO_POINT_EQUIDISTANT "Two_Point_Equidistant"
	Two_Point_Equidistant projection.

#define	SRS_PT_VANDERGRINTEN "VanDerGrinten"
	VanDerGrinten projection.

#define	SRS_PT_KROVAK "Krovak"
	Krovak projection.

#define	SRS_PT_IMW_POLYCONIC "International_Map_of_the_World_Polyconic"
	International_Map_of_the_World_Polyconic projection.

#define	SRS_PT_WAGNER_I "Wagner_I"
	Wagner_I projection.

#define	SRS_PT_WAGNER_II "Wagner_II"
	Wagner_II projection.

#define	SRS_PT_WAGNER_III "Wagner_III"
	Wagner_III projection.

#define	SRS_PT_WAGNER_IV "Wagner_IV"
	Wagner_IV projection.

#define	SRS_PT_WAGNER_V "Wagner_V"
	Wagner_V projection.

#define	SRS_PT_WAGNER_VI "Wagner_VI"
	Wagner_VI projection.

#define	SRS_PT_WAGNER_VII "Wagner_VII"
	Wagner_VII projection.

#define	SRS_PT_QSC "Quadrilateralized_Spherical_Cube"
	Quadrilateralized_Spherical_Cube projection.

#define	SRS_PT_AITOFF "Aitoff"
	Aitoff projection.

#define	SRS_PT_WINKEL_I "Winkel_I"
	Winkel_I projection.

#define	SRS_PT_WINKEL_II "Winkel_II"
	Winkel_II projection.

#define	SRS_PT_WINKEL_TRIPEL "Winkel_Tripel"
	Winkel_Tripel projection.

#define	SRS_PT_CRASTER_PARABOLIC "Craster_Parabolic"
	Craster_Parabolic projection.

#define	SRS_PT_LOXIMUTHAL "Loximuthal"
	Loximuthal projection.

#define	SRS_PT_QUARTIC_AUTHALIC "Quartic_Authalic"
	Quartic_Authalic projection.

#define	SRS_PT_SCH "Spherical_Cross_Track_Height"
	Spherical_Cross_Track_Height projection.

#define	SRS_PP_CENTRAL_MERIDIAN "central_meridian"
	central_meridian projection parameter

#define	SRS_PP_SCALE_FACTOR "scale_factor"
	scale_factor projection parameter

#define	SRS_PP_STANDARD_PARALLEL_1 "standard_parallel_1"
	standard_parallel_1 projection parameter

#define	SRS_PP_STANDARD_PARALLEL_2 "standard_parallel_2"
	standard_parallel_2 projection parameter

#define	SRS_PP_PSEUDO_STD_PARALLEL_1 "pseudo_standard_parallel_1"
	pseudo_standard_parallel_1 projection parameter

#define	SRS_PP_LONGITUDE_OF_CENTER "longitude_of_center"
	longitude_of_center projection parameter

#define	SRS_PP_LATITUDE_OF_CENTER "latitude_of_center"
	latitude_of_center projection parameter

#define	SRS_PP_LONGITUDE_OF_ORIGIN "longitude_of_origin"
	longitude_of_origin projection parameter

#define	SRS_PP_LATITUDE_OF_ORIGIN "latitude_of_origin"
	latitude_of_origin projection parameter

#define	SRS_PP_FALSE_EASTING "false_easting"
	false_easting projection parameter

#define	SRS_PP_FALSE_NORTHING "false_northing"
	false_northing projection parameter

#define	SRS_PP_AZIMUTH "azimuth"
	azimuth projection parameter

#define	SRS_PP_LONGITUDE_OF_POINT_1 "longitude_of_point_1"
	longitude_of_point_1 projection parameter

#define	SRS_PP_LATITUDE_OF_POINT_1 "latitude_of_point_1"
	latitude_of_point_1 projection parameter

#define	SRS_PP_LONGITUDE_OF_POINT_2 "longitude_of_point_2"
	longitude_of_point_2 projection parameter

#define	SRS_PP_LATITUDE_OF_POINT_2 "latitude_of_point_2"
	latitude_of_point_2 projection parameter

#define	SRS_PP_LONGITUDE_OF_POINT_3 "longitude_of_point_3"
	longitude_of_point_3 projection parameter

#define	SRS_PP_LATITUDE_OF_POINT_3 "latitude_of_point_3"
	latitude_of_point_3 projection parameter

#define	SRS_PP_RECTIFIED_GRID_ANGLE "rectified_grid_angle"
	rectified_grid_angle projection parameter

#define	SRS_PP_LANDSAT_NUMBER "landsat_number"
	landsat_number projection parameter

#define	SRS_PP_PATH_NUMBER "path_number"
	path_number projection parameter

#define	SRS_PP_PERSPECTIVE_POINT_HEIGHT "perspective_point_height"
	perspective_point_height projection parameter

#define	SRS_PP_SATELLITE_HEIGHT "satellite_height"
	satellite_height projection parameter

#define	SRS_PP_FIPSZONE "fipszone"
	fipszone projection parameter

#define	SRS_PP_ZONE "zone"
	zone projection parameter

#define	SRS_PP_LATITUDE_OF_1ST_POINT "Latitude_Of_1st_Point"
	Latitude_Of_1st_Point projection parameter.

#define	SRS_PP_LONGITUDE_OF_1ST_POINT "Longitude_Of_1st_Point"
	Longitude_Of_1st_Point projection parameter.

#define	SRS_PP_LATITUDE_OF_2ND_POINT "Latitude_Of_2nd_Point"
	Latitude_Of_2nd_Point projection parameter.

#define	SRS_PP_LONGITUDE_OF_2ND_POINT "Longitude_Of_2nd_Point"
	Longitude_Of_2nd_Point projection parameter.

#define	SRS_PP_PEG_POINT_LATITUDE "peg_point_latitude"
	peg_point_latitude projection parameter

#define	SRS_PP_PEG_POINT_LONGITUDE "peg_point_longitude"
	peg_point_longitude projection parameter

#define	SRS_PP_PEG_POINT_HEADING "peg_point_heading"
	peg_point_heading projection parameter

#define	SRS_PP_PEG_POINT_HEIGHT "peg_point_height"
	peg_point_height projection parameter

#define	SRS_UL_METER "Meter"
	Linear unit Meter.

#define	SRS_UL_FOOT "Foot (International)" /* or just "FOOT"? */
	Linear unit Foot (International)

#define	SRS_UL_FOOT_CONV "0.3048"
	Linear unit Foot (International) conversion factor to meter.

#define	SRS_UL_US_FOOT "Foot_US" /* or "US survey foot" from EPSG */
	Linear unit Foot.

#define	SRS_UL_US_FOOT_CONV "0.3048006096012192"
	Linear unit Foot conversion factor to meter.

#define	SRS_UL_NAUTICAL_MILE "Nautical Mile"
	Linear unit Nautical Mile.

#define	SRS_UL_NAUTICAL_MILE_CONV "1852.0"
	Linear unit Nautical Mile conversion factor to meter.

#define	SRS_UL_LINK "Link" /* Based on US Foot */
	Linear unit Link.

#define	SRS_UL_LINK_CONV "0.20116684023368047"
	Linear unit Link conversion factor to meter.

#define	SRS_UL_CHAIN "Chain" /* based on US Foot */
	Linear unit Chain.

#define	SRS_UL_CHAIN_CONV "20.116684023368047"
	Linear unit Chain conversion factor to meter.

#define	SRS_UL_ROD "Rod" /* based on US Foot */
	Linear unit Rod.

#define	SRS_UL_ROD_CONV "5.02921005842012"
	Linear unit Rod conversion factor to meter.

#define	SRS_UL_LINK_Clarke "Link_Clarke"
	Linear unit Link_Clarke.

#define	SRS_UL_LINK_Clarke_CONV "0.2011661949"
	Linear unit Link_Clarke conversion factor to meter.

#define	SRS_UL_KILOMETER "Kilometer"
	Linear unit Kilometer.

#define	SRS_UL_KILOMETER_CONV "1000."
	Linear unit Kilometer conversion factor to meter.

#define	SRS_UL_DECIMETER "Decimeter"
	Linear unit Decimeter.

#define	SRS_UL_DECIMETER_CONV "0.1"
	Linear unit Decimeter conversion factor to meter.

#define	SRS_UL_CENTIMETER "Centimeter"
	Linear unit Decimeter.

#define	SRS_UL_CENTIMETER_CONV "0.01"
	Linear unit Decimeter conversion factor to meter.

#define	SRS_UL_MILLIMETER "Millimeter"
	Linear unit Millimeter.

#define	SRS_UL_MILLIMETER_CONV "0.001"
	Linear unit Millimeter conversion factor to meter.

#define	SRS_UL_INTL_NAUT_MILE "Nautical_Mile_International"
	Linear unit Nautical_Mile_International.

#define	SRS_UL_INTL_NAUT_MILE_CONV "1852.0"
	Linear unit Nautical_Mile_International conversion factor to meter.

#define	SRS_UL_INTL_INCH "Inch_International"
	Linear unit Inch_International.

#define	SRS_UL_INTL_INCH_CONV "0.0254"
	Linear unit Inch_International conversion factor to meter.

#define	SRS_UL_INTL_FOOT "Foot_International"
	Linear unit Foot_International.

#define	SRS_UL_INTL_FOOT_CONV "0.3048"
	Linear unit Foot_International conversion factor to meter.

#define	SRS_UL_INTL_YARD "Yard_International"
	Linear unit Yard_International.

#define	SRS_UL_INTL_YARD_CONV "0.9144"
	Linear unit Yard_International conversion factor to meter.

#define	SRS_UL_INTL_STAT_MILE "Statute_Mile_International"
	Linear unit Statute_Mile_International.

#define	SRS_UL_INTL_STAT_MILE_CONV "1609.344"
	Linear unit Statute_Mile_Internationalconversion factor to meter.

#define	SRS_UL_INTL_FATHOM "Fathom_International"
	Linear unit Fathom_International.

#define	SRS_UL_INTL_FATHOM_CONV "1.8288"
	Linear unit Fathom_International conversion factor to meter.

#define	SRS_UL_INTL_CHAIN "Chain_International"
	Linear unit Chain_International.

#define	SRS_UL_INTL_CHAIN_CONV "20.1168"
	Linear unit Chain_International conversion factor to meter.

#define	SRS_UL_INTL_LINK "Link_International"
	Linear unit Link_International.

#define	SRS_UL_INTL_LINK_CONV "0.201168"
	Linear unit Link_International conversion factor to meter.

#define	SRS_UL_US_INCH "Inch_US_Surveyor"
	Linear unit Inch_US_Surveyor.

#define	SRS_UL_US_INCH_CONV "0.025400050800101603"
	Linear unit Inch_US_Surveyor conversion factor to meter.

#define	SRS_UL_US_YARD "Yard_US_Surveyor"
	Linear unit Yard_US_Surveyor.

#define	SRS_UL_US_YARD_CONV "0.914401828803658"
	Linear unit Yard_US_Surveyor conversion factor to meter.

#define	SRS_UL_US_CHAIN "Chain_US_Surveyor"
	Linear unit Chain_US_Surveyor.

#define	SRS_UL_US_CHAIN_CONV "20.11684023368047"
	Linear unit Chain_US_Surveyor conversion factor to meter.

#define	SRS_UL_US_STAT_MILE "Statute_Mile_US_Surveyor"
	Linear unit Statute_Mile_US_Surveyor.

#define	SRS_UL_US_STAT_MILE_CONV "1609.347218694437"
	Linear unit Statute_Mile_US_Surveyor conversion factor to meter.

#define	SRS_UL_INDIAN_YARD "Yard_Indian"
	Linear unit Yard_Indian.

#define	SRS_UL_INDIAN_YARD_CONV "0.91439523"
	Linear unit Yard_Indian conversion factor to meter.

#define	SRS_UL_INDIAN_FOOT "Foot_Indian"
	Linear unit Foot_Indian.

#define	SRS_UL_INDIAN_FOOT_CONV "0.30479841"
	Linear unit Foot_Indian conversion factor to meter.

#define	SRS_UL_INDIAN_CHAIN "Chain_Indian"
	Linear unit Chain_Indian.

#define	SRS_UL_INDIAN_CHAIN_CONV "20.11669506"
	Linear unit Chain_Indian conversion factor to meter.

#define	SRS_UA_DEGREE "degree"
	Angular unit degree.

#define	SRS_UA_DEGREE_CONV "0.0174532925199433"
	Angular unit degree conversion factor to radians.

#define	SRS_UA_RADIAN "radian"
	Angular unit radian.

#define	SRS_PM_GREENWICH "Greenwich"
	Prime meridian Greenwich.

#define	SRS_DN_NAD27 "North_American_Datum_1927"
	North_American_Datum_1927 datum name.

#define	SRS_DN_NAD83 "North_American_Datum_1983"
	North_American_Datum_1983 datum name.

#define	SRS_DN_WGS72 "WGS_1972"
	WGS_1972 datum name.

#define	SRS_DN_WGS84 "WGS_1984"
	WGS_1984 datum name.

#define	SRS_WGS84_SEMIMAJOR 6378137.0
	Semi-major axis of the WGS84 ellipsoid.

#define	SRS_WGS84_INVFLATTENING 298.257223563
	Inverse flattening of the WGS84 ellipsoid.

Typedefs
typedef void *	OGRSpatialReferenceH
	Opaque type for a Spatial Reference object.

typedef void *	OGRCoordinateTransformationH
	Opaque type for a coordinate transformation object.

typedef struct OSRCRSListParameters	OSRCRSListParameters
	Structure to describe optional parameters to OSRGetCRSInfoListFromDatabase()

typedef struct OGRCoordinateTransformationOptions *	OGRCoordinateTransformationOptionsH
	Coordinate transformation options.

Enumerations
enum	OGRAxisOrientation { OAO_Other = 0 , OAO_North = 1 , OAO_South = 2 , OAO_East = 3 , OAO_West = 4 , OAO_Up = 5 , OAO_Down = 6 }
	Axis orientations (corresponds to CS_AxisOrientationEnum). More...

enum	OSRAxisMappingStrategy { OAMS_TRADITIONAL_GIS_ORDER , OAMS_AUTHORITY_COMPLIANT , OAMS_CUSTOM }
	Data axis to CRS axis mapping strategy. More...

enum	OSRCRSType { OSR_CRS_TYPE_GEOGRAPHIC_2D , OSR_CRS_TYPE_GEOGRAPHIC_3D , OSR_CRS_TYPE_GEOCENTRIC , OSR_CRS_TYPE_PROJECTED , OSR_CRS_TYPE_VERTICAL , OSR_CRS_TYPE_COMPOUND , OSR_CRS_TYPE_OTHER }
	Type of Coordinate Reference System (CRS). More...

Functions
const char *	OSRAxisEnumToName (OGRAxisOrientation eOrientation)
	Return the string representation for the OGRAxisOrientation enumeration.

void	OSRSetPROJSearchPaths (const char const papszPaths)
	Set the search path(s) for PROJ resource files.

char **	OSRGetPROJSearchPaths (void)
	Get the search path(s) for PROJ resource files.

void	OSRSetPROJAuxDbPaths (const char const papszPaths)
	Set list of PROJ auxiliary database filenames.

char **	OSRGetPROJAuxDbPaths (void)
	Get PROJ auxiliary database filenames.

void	OSRSetPROJEnableNetwork (int enabled)
	Enable or disable PROJ networking capabilities.

int	OSRGetPROJEnableNetwork (void)
	Get whether PROJ networking capabilities are enabled.

void	OSRGetPROJVersion (int pnMajor, int pnMinor, int *pnPatch)
	Get the PROJ version.

OGRSpatialReferenceH	OSRNewSpatialReference (const char *)
	Constructor.

OGRSpatialReferenceH	OSRCloneGeogCS (OGRSpatialReferenceH)
	Make a duplicate of the GEOGCS node of this OGRSpatialReference object.

OGRSpatialReferenceH	OSRClone (OGRSpatialReferenceH)
	Make a duplicate of this OGRSpatialReference.

void	OSRDestroySpatialReference (OGRSpatialReferenceH)
	OGRSpatialReference destructor.

int	OSRReference (OGRSpatialReferenceH)
	Increments the reference count by one.

int	OSRDereference (OGRSpatialReferenceH)
	Decrements the reference count by one.

void	OSRRelease (OGRSpatialReferenceH)
	Decrements the reference count by one, and destroy if zero.

OGRErr	OSRValidate (OGRSpatialReferenceH)
	Validate SRS tokens.

OGRErr	OSRImportFromEPSG (OGRSpatialReferenceH, int)
	Initialize SRS based on EPSG geographic, projected or vertical CRS code.

OGRErr	OSRImportFromEPSGA (OGRSpatialReferenceH, int)
	Initialize SRS based on EPSG geographic, projected or vertical CRS code.

OGRErr	OSRImportFromWkt (OGRSpatialReferenceH, char **)
	Import from WKT string.

OGRErr	OSRImportFromProj4 (OGRSpatialReferenceH, const char *)
	Import PROJ coordinate string.

OGRErr	OSRImportFromESRI (OGRSpatialReferenceH, char **)
	Import coordinate system from ESRI .prj format(s).

OGRErr	OSRImportFromPCI (OGRSpatialReferenceH hSRS, const char , const char , double *)
	Import coordinate system from PCI projection definition.

OGRErr	OSRImportFromUSGS (OGRSpatialReferenceH, long, long, double *, long)
	Import coordinate system from USGS projection definition.

OGRErr	OSRImportFromXML (OGRSpatialReferenceH, const char *)
	Import coordinate system from XML format (GML only currently).

OGRErr	OSRImportFromDict (OGRSpatialReferenceH, const char , const char )
	Read SRS from WKT dictionary.

OGRErr	OSRImportFromPanorama (OGRSpatialReferenceH, long, long, long, double *)
	Import coordinate system from "Panorama" GIS projection definition.

OGRErr	OSRImportFromOzi (OGRSpatialReferenceH, const char const )
	Import coordinate system from OziExplorer projection definition.

OGRErr	OSRImportFromMICoordSys (OGRSpatialReferenceH, const char *)
	Import Mapinfo style CoordSys definition.

OGRErr	OSRImportFromERM (OGRSpatialReferenceH, const char , const char , const char *)
	Create OGR WKT from ERMapper projection definitions.

OGRErr	OSRImportFromUrl (OGRSpatialReferenceH, const char *)
	Set spatial reference from a URL.

OGRErr	OSRImportFromCF1 (OGRSpatialReferenceH, CSLConstList papszKeyValues, const char *pszUnits)
	Import a CRS from netCDF CF-1 definitions.

OGRErr	OSRExportToWkt (OGRSpatialReferenceH, char **)
	Convert this SRS into WKT 1 format.

OGRErr	OSRExportToWktEx (OGRSpatialReferenceH, char *ppszResult, const char const *papszOptions)
	Convert this SRS into WKT format.

OGRErr	OSRExportToPrettyWkt (OGRSpatialReferenceH, char **, int)
	Convert this SRS into a nicely formatted WKT 1 string for display to a person.

OGRErr	OSRExportToPROJJSON (OGRSpatialReferenceH hSRS, char *ppszReturn, const char const *papszOptions)
	Convert this SRS into PROJJSON format.

OGRErr	OSRExportToProj4 (OGRSpatialReferenceH, char **)
	Export coordinate system in PROJ.4 legacy format.

OGRErr	OSRExportToPCI (OGRSpatialReferenceH, char , char , double **)
	Export coordinate system in PCI projection definition.

OGRErr	OSRExportToUSGS (OGRSpatialReferenceH, long , long , double *, long )
	Export coordinate system in USGS GCTP projection definition.

OGRErr	OSRExportToXML (OGRSpatialReferenceH, char *, const char )
	Export coordinate system in XML format.

OGRErr	OSRExportToPanorama (OGRSpatialReferenceH, long , long , long , long , double *)
	Export coordinate system in "Panorama" GIS projection definition.

OGRErr	OSRExportToMICoordSys (OGRSpatialReferenceH, char **)
	Export coordinate system in Mapinfo style CoordSys format.

OGRErr	OSRExportToERM (OGRSpatialReferenceH, char , char , char *)
	Convert coordinate system to ERMapper format.

OGRErr	OSRExportToCF1 (OGRSpatialReferenceH, char ppszGridMappingName, char ppapszKeyValues, char *ppszUnits, CSLConstList papszOptions)
	Export a CRS to netCDF CF-1 definitions.

OGRErr	OSRMorphToESRI (OGRSpatialReferenceH)
	Convert in place to ESRI WKT format.

OGRErr	OSRMorphFromESRI (OGRSpatialReferenceH)
	Convert in place from ESRI WKT format.

OGRErr	OSRStripVertical (OGRSpatialReferenceH)
	Convert a compound cs into a horizontal CS.

OGRSpatialReferenceH	OSRConvertToOtherProjection (OGRSpatialReferenceH hSRS, const char pszTargetProjection, const char const *papszOptions)
	Convert to another equivalent projection.

const char *	OSRGetName (OGRSpatialReferenceH hSRS)
	Return the CRS name.

OGRErr	OSRSetAttrValue (OGRSpatialReferenceH hSRS, const char pszNodePath, const char pszNewNodeValue)
	Set attribute value in spatial reference.

const char *	OSRGetAttrValue (OGRSpatialReferenceH hSRS, const char *pszName, int iChild)
	Fetch indicated attribute of named node.

OGRErr	OSRSetAngularUnits (OGRSpatialReferenceH, const char *, double)
	Set the angular units for the geographic coordinate system.

double	OSRGetAngularUnits (OGRSpatialReferenceH, char **)
	Fetch angular geographic coordinate system units.

OGRErr	OSRSetLinearUnits (OGRSpatialReferenceH, const char *, double)
	Set the linear units for the projection.

OGRErr	OSRSetTargetLinearUnits (OGRSpatialReferenceH, const char , const char , double)
	Set the linear units for the target node.

OGRErr	OSRSetLinearUnitsAndUpdateParameters (OGRSpatialReferenceH, const char *, double)
	Set the linear units for the projection.

double	OSRGetLinearUnits (OGRSpatialReferenceH, char **)
	Fetch linear projection units.

double	OSRGetTargetLinearUnits (OGRSpatialReferenceH, const char , char *)
	Fetch linear projection units.

double	OSRGetPrimeMeridian (OGRSpatialReferenceH, char **)
	Fetch prime meridian info.

int	OSRIsGeographic (OGRSpatialReferenceH)
	Check if geographic coordinate system.

int	OSRIsDerivedGeographic (OGRSpatialReferenceH)
	Check if the CRS is a derived geographic coordinate system.

int	OSRIsLocal (OGRSpatialReferenceH)
	Check if local coordinate system.

int	OSRIsProjected (OGRSpatialReferenceH)
	Check if projected coordinate system.

int	OSRIsDerivedProjected (OGRSpatialReferenceH)
	Check if the CRS is a derived projected coordinate system.

int	OSRIsCompound (OGRSpatialReferenceH)
	Check if the coordinate system is compound.

int	OSRIsGeocentric (OGRSpatialReferenceH)
	Check if geocentric coordinate system.

int	OSRIsVertical (OGRSpatialReferenceH)
	Check if vertical coordinate system.

int	OSRIsDynamic (OGRSpatialReferenceH)
	Check if a CRS is a dynamic CRS.

int	OSRHasPointMotionOperation (OGRSpatialReferenceH)
	Check if a CRS has at least an associated point motion operation.

int	OSRIsSameGeogCS (OGRSpatialReferenceH, OGRSpatialReferenceH)
	Do the GeogCS'es match?

int	OSRIsSameVertCS (OGRSpatialReferenceH, OGRSpatialReferenceH)
	Do the VertCS'es match?

int	OSRIsSame (OGRSpatialReferenceH, OGRSpatialReferenceH)
	Do these two spatial references describe the same system ?

int	OSRIsSameEx (OGRSpatialReferenceH, OGRSpatialReferenceH, const char const papszOptions)
	Do these two spatial references describe the same system ?

void	OSRSetCoordinateEpoch (OGRSpatialReferenceH hSRS, double dfCoordinateEpoch)
	Set the coordinate epoch, as decimal year.

double	OSRGetCoordinateEpoch (OGRSpatialReferenceH hSRS)
	Get the coordinate epoch, as decimal year.

OGRErr	OSRSetLocalCS (OGRSpatialReferenceH hSRS, const char *pszName)
	Set the user visible LOCAL_CS name.

OGRErr	OSRSetProjCS (OGRSpatialReferenceH hSRS, const char *pszName)
	Set the user visible PROJCS name.

OGRErr	OSRSetGeocCS (OGRSpatialReferenceH hSRS, const char *pszName)
	Set the user visible PROJCS name.

OGRErr	OSRSetWellKnownGeogCS (OGRSpatialReferenceH hSRS, const char *pszName)
	Set a GeogCS based on well known name.

OGRErr	OSRSetFromUserInput (OGRSpatialReferenceH hSRS, const char *)
	Set spatial reference from various text formats.

OGRErr	OSRSetFromUserInputEx (OGRSpatialReferenceH hSRS, const char *, CSLConstList papszOptions)
	Set spatial reference from various text formats.

OGRErr	OSRCopyGeogCSFrom (OGRSpatialReferenceH hSRS, const OGRSpatialReferenceH hSrcSRS)
	Copy GEOGCS from another OGRSpatialReference.

OGRErr	OSRSetTOWGS84 (OGRSpatialReferenceH hSRS, double, double, double, double, double, double, double)
	Set the Bursa-Wolf conversion to WGS84.

OGRErr	OSRGetTOWGS84 (OGRSpatialReferenceH hSRS, double *, int)
	Fetch TOWGS84 parameters, if available.

OGRErr	OSRAddGuessedTOWGS84 (OGRSpatialReferenceH hSRS)
	Try to add a a 3-parameter or 7-parameter Helmert transformation to WGS84.

OGRErr	OSRSetCompoundCS (OGRSpatialReferenceH hSRS, const char *pszName, OGRSpatialReferenceH hHorizSRS, OGRSpatialReferenceH hVertSRS)
	Setup a compound coordinate system.

OGRErr	OSRPromoteTo3D (OGRSpatialReferenceH hSRS, const char *pszName)
	"Promotes" a 2D CRS to a 3D CRS one.

OGRErr	OSRDemoteTo2D (OGRSpatialReferenceH hSRS, const char *pszName)
	"Demote" a 3D CRS to a 2D CRS one.

OGRErr	OSRSetGeogCS (OGRSpatialReferenceH hSRS, const char pszGeogName, const char pszDatumName, const char pszEllipsoidName, double dfSemiMajor, double dfInvFlattening, const char pszPMName, double dfPMOffset, const char *pszUnits, double dfConvertToRadians)
	Set geographic coordinate system.

OGRErr	OSRSetVertCS (OGRSpatialReferenceH hSRS, const char pszVertCSName, const char pszVertDatumName, int nVertDatumType)
	Setup the vertical coordinate system.

double	OSRGetSemiMajor (OGRSpatialReferenceH, OGRErr *)
	Get spheroid semi major axis.

double	OSRGetSemiMinor (OGRSpatialReferenceH, OGRErr *)
	Get spheroid semi minor axis.

double	OSRGetInvFlattening (OGRSpatialReferenceH, OGRErr *)
	Get spheroid inverse flattening.

OGRErr	OSRSetAuthority (OGRSpatialReferenceH hSRS, const char pszTargetKey, const char pszAuthority, int nCode)
	Set the authority for a node.

const char *	OSRGetAuthorityCode (OGRSpatialReferenceH hSRS, const char *pszTargetKey)
	Get the authority code for a node.

const char *	OSRGetAuthorityName (OGRSpatialReferenceH hSRS, const char *pszTargetKey)
	Get the authority name for a node.

int	OSRGetAreaOfUse (OGRSpatialReferenceH hSRS, double pdfWestLongitudeDeg, double pdfSouthLatitudeDeg, double pdfEastLongitudeDeg, double pdfNorthLatitudeDeg, const char **ppszAreaName)
	Return the area of use of the CRS.

OGRErr	OSRSetProjection (OGRSpatialReferenceH, const char *)
	Set a projection name.

OGRErr	OSRSetProjParm (OGRSpatialReferenceH, const char *, double)
	Set a projection parameter value.

double	OSRGetProjParm (OGRSpatialReferenceH hSRS, const char pszParamName, double dfDefault, OGRErr )
	Fetch a projection parameter value.

OGRErr	OSRSetNormProjParm (OGRSpatialReferenceH, const char *, double)
	Set a projection parameter with a normalized value.

double	OSRGetNormProjParm (OGRSpatialReferenceH hSRS, const char pszParamName, double dfDefault, OGRErr )
	This function is the same as OGRSpatialReference::

OGRErr	OSRSetUTM (OGRSpatialReferenceH hSRS, int nZone, int bNorth)
	Set UTM projection definition.

int	OSRGetUTMZone (OGRSpatialReferenceH hSRS, int *pbNorth)
	Get utm zone information.

OGRErr	OSRSetStatePlane (OGRSpatialReferenceH hSRS, int nZone, int bNAD83)
	Set State Plane projection definition.

OGRErr	OSRSetStatePlaneWithUnits (OGRSpatialReferenceH hSRS, int nZone, int bNAD83, const char *pszOverrideUnitName, double dfOverrideUnit)
	Set State Plane projection definition.

OGRErr	OSRAutoIdentifyEPSG (OGRSpatialReferenceH hSRS)
	Set EPSG authority info if possible.

OGRSpatialReferenceH *	OSRFindMatches (OGRSpatialReferenceH hSRS, char *papszOptions, int pnEntries, int **ppanMatchConfidence)
	Try to identify a match between the passed SRS and a related SRS in a catalog.

void	OSRFreeSRSArray (OGRSpatialReferenceH *pahSRS)
	Free return of OSRIdentifyMatches()

int	OSREPSGTreatsAsLatLong (OGRSpatialReferenceH hSRS)
	This function returns TRUE if this geographic coordinate system should be treated as having lat/long coordinate ordering.

int	OSREPSGTreatsAsNorthingEasting (OGRSpatialReferenceH hSRS)
	This function returns TRUE if this projected coordinate system should be treated as having northing/easting coordinate ordering.

const char *	OSRGetAxis (OGRSpatialReferenceH hSRS, const char pszTargetKey, int iAxis, OGRAxisOrientation peOrientation)
	Fetch the orientation of one axis.

int	OSRGetAxesCount (OGRSpatialReferenceH hSRS)
	Return the number of axis of the coordinate system of the CRS.

OGRErr	OSRSetAxes (OGRSpatialReferenceH hSRS, const char pszTargetKey, const char pszXAxisName, OGRAxisOrientation eXAxisOrientation, const char *pszYAxisName, OGRAxisOrientation eYAxisOrientation)
	Set the axes for a coordinate system.

OSRAxisMappingStrategy	OSRGetAxisMappingStrategy (OGRSpatialReferenceH hSRS)
	Return the data axis to CRS axis mapping strategy.

void	OSRSetAxisMappingStrategy (OGRSpatialReferenceH hSRS, OSRAxisMappingStrategy strategy)
	Set the data axis to CRS axis mapping strategy.

const int *	OSRGetDataAxisToSRSAxisMapping (OGRSpatialReferenceH hSRS, int *pnCount)
	Return the data axis to SRS axis mapping.

OGRErr	OSRSetDataAxisToSRSAxisMapping (OGRSpatialReferenceH hSRS, int nMappingSize, const int *panMapping)
	Set a custom data axis to CRS axis mapping.

OGRErr	OSRSetACEA (OGRSpatialReferenceH hSRS, double dfStdP1, double dfStdP2, double dfCenterLat, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)
	Albers Conic Equal Area.

OGRErr	OSRSetAE (OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)
	Azimuthal Equidistant.

OGRErr	OSRSetBonne (OGRSpatialReferenceH hSRS, double dfStandardParallel, double dfCentralMeridian, double dfFalseEasting, double dfFalseNorthing)
	Bonne.

OGRErr	OSRSetCEA (OGRSpatialReferenceH hSRS, double dfStdP1, double dfCentralMeridian, double dfFalseEasting, double dfFalseNorthing)
	Cylindrical Equal Area.

OGRErr	OSRSetCS (OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)
	Cassini-Soldner.

OGRErr	OSRSetEC (OGRSpatialReferenceH hSRS, double dfStdP1, double dfStdP2, double dfCenterLat, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)
	Equidistant Conic.

OGRErr	OSRSetEckert (OGRSpatialReferenceH hSRS, int nVariation, double dfCentralMeridian, double dfFalseEasting, double dfFalseNorthing)
	Eckert I-VI.

OGRErr	OSRSetEckertIV (OGRSpatialReferenceH hSRS, double dfCentralMeridian, double dfFalseEasting, double dfFalseNorthing)
	Eckert IV.

OGRErr	OSRSetEckertVI (OGRSpatialReferenceH hSRS, double dfCentralMeridian, double dfFalseEasting, double dfFalseNorthing)
	Eckert VI.

OGRErr	OSRSetEquirectangular (OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)
	Equirectangular.

OGRErr	OSRSetEquirectangular2 (OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfPseudoStdParallel1, double dfFalseEasting, double dfFalseNorthing)
	Equirectangular generalized form.

OGRErr	OSRSetGS (OGRSpatialReferenceH hSRS, double dfCentralMeridian, double dfFalseEasting, double dfFalseNorthing)
	Gall Stereograpic.

OGRErr	OSRSetGH (OGRSpatialReferenceH hSRS, double dfCentralMeridian, double dfFalseEasting, double dfFalseNorthing)
	Goode Homolosine.

OGRErr	OSRSetIGH (OGRSpatialReferenceH hSRS)
	Interrupted Goode Homolosine.

OGRErr	OSRSetGEOS (OGRSpatialReferenceH hSRS, double dfCentralMeridian, double dfSatelliteHeight, double dfFalseEasting, double dfFalseNorthing)
	GEOS - Geostationary Satellite View.

OGRErr	OSRSetGaussSchreiberTMercator (OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfScale, double dfFalseEasting, double dfFalseNorthing)
	Gauss Schreiber Transverse Mercator.

OGRErr	OSRSetGnomonic (OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)
	Gnomonic.

OGRErr	OSRSetHOM (OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfAzimuth, double dfRectToSkew, double dfScale, double dfFalseEasting, double dfFalseNorthing)
	Hotine Oblique Mercator using azimuth angle.

OGRErr	OSRSetHOMAC (OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfAzimuth, double dfRectToSkew, double dfScale, double dfFalseEasting, double dfFalseNorthing)
	Set an Oblique Mercator projection using azimuth angle.

OGRErr	OSRSetHOM2PNO (OGRSpatialReferenceH hSRS, double dfCenterLat, double dfLat1, double dfLong1, double dfLat2, double dfLong2, double dfScale, double dfFalseEasting, double dfFalseNorthing)
	Hotine Oblique Mercator using two points on centerline.

OGRErr	OSRSetIWMPolyconic (OGRSpatialReferenceH hSRS, double dfLat1, double dfLat2, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)
	International Map of the World Polyconic.

OGRErr	OSRSetKrovak (OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfAzimuth, double dfPseudoStdParallelLat, double dfScale, double dfFalseEasting, double dfFalseNorthing)
	Krovak Oblique Conic Conformal.

OGRErr	OSRSetLAEA (OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)
	Lambert Azimuthal Equal-Area.

OGRErr	OSRSetLCC (OGRSpatialReferenceH hSRS, double dfStdP1, double dfStdP2, double dfCenterLat, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)
	Lambert Conformal Conic.

OGRErr	OSRSetLCC1SP (OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfScale, double dfFalseEasting, double dfFalseNorthing)
	Lambert Conformal Conic 1SP.

OGRErr	OSRSetLCCB (OGRSpatialReferenceH hSRS, double dfStdP1, double dfStdP2, double dfCenterLat, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)
	Lambert Conformal Conic (Belgium)

OGRErr	OSRSetMC (OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)
	Miller Cylindrical.

OGRErr	OSRSetMercator (OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfScale, double dfFalseEasting, double dfFalseNorthing)
	Mercator.

OGRErr	OSRSetMercator2SP (OGRSpatialReferenceH hSRS, double dfStdP1, double dfCenterLat, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)
	Mercator 2SP.

OGRErr	OSRSetMollweide (OGRSpatialReferenceH hSRS, double dfCentralMeridian, double dfFalseEasting, double dfFalseNorthing)
	Mollweide.

OGRErr	OSRSetNZMG (OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)
	New Zealand Map Grid.

OGRErr	OSRSetOS (OGRSpatialReferenceH hSRS, double dfOriginLat, double dfCMeridian, double dfScale, double dfFalseEasting, double dfFalseNorthing)
	Oblique Stereographic.

OGRErr	OSRSetOrthographic (OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)
	Orthographic.

OGRErr	OSRSetPolyconic (OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)
	Polyconic.

OGRErr	OSRSetPS (OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfScale, double dfFalseEasting, double dfFalseNorthing)
	Polar Stereographic.

OGRErr	OSRSetRobinson (OGRSpatialReferenceH hSRS, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)
	Robinson.

OGRErr	OSRSetSinusoidal (OGRSpatialReferenceH hSRS, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)
	Sinusoidal.

OGRErr	OSRSetStereographic (OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfScale, double dfFalseEasting, double dfFalseNorthing)
	Stereographic.

OGRErr	OSRSetSOC (OGRSpatialReferenceH hSRS, double dfLatitudeOfOrigin, double dfCentralMeridian, double dfFalseEasting, double dfFalseNorthing)
	Swiss Oblique Cylindrical.

OGRErr	OSRSetTM (OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfScale, double dfFalseEasting, double dfFalseNorthing)
	Transverse Mercator.

OGRErr	OSRSetTMVariant (OGRSpatialReferenceH hSRS, const char *pszVariantName, double dfCenterLat, double dfCenterLong, double dfScale, double dfFalseEasting, double dfFalseNorthing)
	Transverse Mercator variant.

OGRErr	OSRSetTMG (OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)
	Tunesia Mining Grid

OGRErr	OSRSetTMSO (OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong, double dfScale, double dfFalseEasting, double dfFalseNorthing)
	Transverse Mercator (South Oriented)

OGRErr	OSRSetTPED (OGRSpatialReferenceH hSRS, double dfLat1, double dfLong1, double dfLat2, double dfLong2, double dfFalseEasting, double dfFalseNorthing)
	TPED (Two Point Equi Distant)

OGRErr	OSRSetVDG (OGRSpatialReferenceH hSRS, double dfCenterLong, double dfFalseEasting, double dfFalseNorthing)
	VanDerGrinten.

OGRErr	OSRSetWagner (OGRSpatialReferenceH hSRS, int nVariation, double dfCenterLat, double dfFalseEasting, double dfFalseNorthing)
	Wagner I – VII.

OGRErr	OSRSetQSC (OGRSpatialReferenceH hSRS, double dfCenterLat, double dfCenterLong)
	Quadrilateralized Spherical Cube.

OGRErr	OSRSetSCH (OGRSpatialReferenceH hSRS, double dfPegLat, double dfPegLong, double dfPegHeading, double dfPegHgt)
	Spherical, Cross-track, Height.

OGRErr	OSRSetVerticalPerspective (OGRSpatialReferenceH hSRS, double dfTopoOriginLat, double dfTopoOriginLon, double dfTopoOriginHeight, double dfViewPointHeight, double dfFalseEasting, double dfFalseNorthing)
	Vertical Perspective / Near-sided Perspective.

double	OSRCalcInvFlattening (double dfSemiMajor, double dfSemiMinor)
	Compute inverse flattening from semi-major and semi-minor axis.

double	OSRCalcSemiMinorFromInvFlattening (double dfSemiMajor, double dfInvFlattening)
	Compute semi-minor axis from semi-major axis and inverse flattening.

void	OSRCleanup (void)
	Cleanup cached SRS related memory.

OSRCRSInfo **	OSRGetCRSInfoListFromDatabase (const char pszAuthName, const OSRCRSListParameters params, int *pnOutResultCount)
	Enumerate CRS objects from the database.

void	OSRDestroyCRSInfoList (OSRCRSInfo **list)
	Destroy the result returned by OSRGetCRSInfoListFromDatabase().

OGRCoordinateTransformationH	OCTNewCoordinateTransformation (OGRSpatialReferenceH hSourceSRS, OGRSpatialReferenceH hTargetSRS)
	Create transformation object.

OGRCoordinateTransformationOptionsH	OCTNewCoordinateTransformationOptions (void)
	Create coordinate transformation options.

int	OCTCoordinateTransformationOptionsSetOperation (OGRCoordinateTransformationOptionsH hOptions, const char *pszCO, int bReverseCO)
	Sets a coordinate operation.

int	OCTCoordinateTransformationOptionsSetAreaOfInterest (OGRCoordinateTransformationOptionsH hOptions, double dfWestLongitudeDeg, double dfSouthLatitudeDeg, double dfEastLongitudeDeg, double dfNorthLatitudeDeg)
	Sets an area of interest.

int	OCTCoordinateTransformationOptionsSetDesiredAccuracy (OGRCoordinateTransformationOptionsH hOptions, double dfAccuracy)
	Sets the desired accuracy for coordinate operations.

int	OCTCoordinateTransformationOptionsSetBallparkAllowed (OGRCoordinateTransformationOptionsH hOptions, int bAllowBallpark)
	Sets whether ballpark transformations are allowed.

int	OCTCoordinateTransformationOptionsSetOnlyBest (OGRCoordinateTransformationOptionsH hOptions, bool bOnlyBest)
	Sets whether only the "best" operation(s) should be used.

void	OCTDestroyCoordinateTransformationOptions (OGRCoordinateTransformationOptionsH)
	Destroy coordinate transformation options.

OGRCoordinateTransformationH	OCTNewCoordinateTransformationEx (OGRSpatialReferenceH hSourceSRS, OGRSpatialReferenceH hTargetSRS, OGRCoordinateTransformationOptionsH hOptions)
	Create transformation object.

OGRCoordinateTransformationH	OCTClone (OGRCoordinateTransformationH hTransform)
	Clone transformation object.

OGRSpatialReferenceH	OCTGetSourceCS (OGRCoordinateTransformationH hTransform)
	Transformation's source coordinate system reference.

OGRSpatialReferenceH	OCTGetTargetCS (OGRCoordinateTransformationH hTransform)
	Transformation's target coordinate system reference.

OGRCoordinateTransformationH	OCTGetInverse (OGRCoordinateTransformationH hTransform)
	Inverse transformation object.

void	OCTDestroyCoordinateTransformation (OGRCoordinateTransformationH)
	OGRCoordinateTransformation destructor.

int	OCTTransform (OGRCoordinateTransformationH hCT, int nCount, double x, double y, double *z)
	Transform an array of points.

int	OCTTransformEx (OGRCoordinateTransformationH hCT, int nCount, double x, double y, double z, int pabSuccess)
	Transform an array of points.

int	OCTTransform4D (OGRCoordinateTransformationH hCT, int nCount, double x, double y, double z, double t, int *pabSuccess)
	Transform an array of points.

int	OCTTransform4DWithErrorCodes (OGRCoordinateTransformationH hCT, int nCount, double x, double y, double z, double t, int *panErrorCodes)
	Transform an array of points.

int	OCTTransformBounds (OGRCoordinateTransformationH hCT, const double xmin, const double ymin, const double xmax, const double ymax, double out_xmin, double out_ymin, double out_xmax, double out_ymax, const int densify_pts)
	Transform boundary.

Detailed Description

C spatial reference system services and defines.

Macro Definition Documentation

◆ SRS_WKT_WGS84_LAT_LONG

#define SRS_WKT_WGS84_LAT_LONG

Value:

    "GEOGCS[\"WGS 84\",DATUM[\"WGS_1984\",SPHEROID[\"WGS "                     \
    "84\",6378137,298.257223563,AUTHORITY[\"EPSG\",\"7030\"]],AUTHORITY["      \
    "\"EPSG\",\"6326\"]],PRIMEM[\"Greenwich\",0,AUTHORITY[\"EPSG\",\"8901\"]]" \
    ",UNIT[\"degree\",0.0174532925199433,AUTHORITY[\"EPSG\",\"9122\"]],AXIS["  \
    "\"Latitude\",NORTH],AXIS[\"Longitude\",EAST],AUTHORITY[\"EPSG\","         \
    "\"4326\"]]"

WGS 84 geodetic (lat/long) WKT / EPSG:4326 with lat,long ordering.

Typedef Documentation

◆ OSRCRSListParameters

typedef struct OSRCRSListParameters OSRCRSListParameters

Structure to describe optional parameters to OSRGetCRSInfoListFromDatabase()

Unused for now.

Enumeration Type Documentation

◆ OGRAxisOrientation

enum OGRAxisOrientation

Axis orientations (corresponds to CS_AxisOrientationEnum).

Enumerator
OAO_Other	Other.
OAO_North	North.
OAO_South	South.
OAO_East	East.
OAO_West	West.
OAO_Up	Up (to space)
OAO_Down	Down (to Earth center)

◆ OSRAxisMappingStrategy

enum OSRAxisMappingStrategy

Data axis to CRS axis mapping strategy.

Enumerator
OAMS_TRADITIONAL_GIS_ORDER	Traditional GIS order.
OAMS_AUTHORITY_COMPLIANT	Compliant with the order mandated by the CRS authority.
OAMS_CUSTOM	Custom.

◆ OSRCRSType

enum OSRCRSType

Type of Coordinate Reference System (CRS).

Enumerator
OSR_CRS_TYPE_GEOGRAPHIC_2D	Geographic 2D CRS.
OSR_CRS_TYPE_GEOGRAPHIC_3D	Geographic 3D CRS.
OSR_CRS_TYPE_GEOCENTRIC	Geocentric CRS.
OSR_CRS_TYPE_PROJECTED	Projected CRS.
OSR_CRS_TYPE_VERTICAL	Vertical CRS.
OSR_CRS_TYPE_COMPOUND	Compound CRS.
OSR_CRS_TYPE_OTHER	Other.

Function Documentation

◆ OCTClone()

OGRCoordinateTransformationH OCTClone ( OGRCoordinateTransformationH hTransform )

Clone transformation object.

This is the same as the C++ function OGRCreateCoordinateTransformation::Clone

Returns: handle to transformation's clone or NULL on error, must be freed with OCTDestroyCoordinateTransformation

Since: GDAL 3.4

◆ OCTCoordinateTransformationOptionsSetAreaOfInterest()

int OCTCoordinateTransformationOptionsSetAreaOfInterest	(	OGRCoordinateTransformationOptionsH	hOptions,
		double	dfWestLongitudeDeg,
		double	dfSouthLatitudeDeg,
		double	dfEastLongitudeDeg,
		double	dfNorthLatitudeDeg
	)

Sets an area of interest.

See OGRCoordinateTransformationOptions::SetAreaOfInterest()

Since: GDAL 3.0

◆ OCTCoordinateTransformationOptionsSetBallparkAllowed()

int OCTCoordinateTransformationOptionsSetBallparkAllowed	(	OGRCoordinateTransformationOptionsH	hOptions,
		int	bAllowBallpark
	)

Sets whether ballpark transformations are allowed.

See OGRCoordinateTransformationOptions::SetDesiredAccuracy()

Since: GDAL 3.3 and PROJ 8

◆ OCTCoordinateTransformationOptionsSetDesiredAccuracy()

int OCTCoordinateTransformationOptionsSetDesiredAccuracy	(	OGRCoordinateTransformationOptionsH	hOptions,
		double	dfAccuracy
	)

Sets the desired accuracy for coordinate operations.

See OGRCoordinateTransformationOptions::SetDesiredAccuracy()

Since: GDAL 3.3

◆ OCTCoordinateTransformationOptionsSetOnlyBest()

int OCTCoordinateTransformationOptionsSetOnlyBest	(	OGRCoordinateTransformationOptionsH	hOptions,
		bool	bOnlyBest
	)

Sets whether only the "best" operation(s) should be used.

See OGRCoordinateTransformationOptions::SetOnlyBest()

Since: GDAL 3.8 and PROJ 9.2

◆ OCTCoordinateTransformationOptionsSetOperation()

int OCTCoordinateTransformationOptionsSetOperation	(	OGRCoordinateTransformationOptionsH	hOptions,
		const char *	pszCO,
		int	bReverseCO
	)

Sets a coordinate operation.

See OGRCoordinateTransformationOptions::SetCoordinateTransformation()

Since: GDAL 3.0

◆ OCTDestroyCoordinateTransformation()

void OCTDestroyCoordinateTransformation ( OGRCoordinateTransformationH hCT )

OGRCoordinateTransformation destructor.

This function is the same as OGRCoordinateTransformation::DestroyCT()

Parameters

hCT	the object to delete

◆ OCTDestroyCoordinateTransformationOptions()

void OCTDestroyCoordinateTransformationOptions ( OGRCoordinateTransformationOptionsH hOptions )

Destroy coordinate transformation options.

Since: GDAL 3.0

◆ OCTGetInverse()

OGRCoordinateTransformationH OCTGetInverse ( OGRCoordinateTransformationH hTransform )

Inverse transformation object.

This is the same as the C++ function OGRCreateCoordinateTransformation::GetInverse

Returns: handle to inverse transformation or NULL on error, must be freed with OCTDestroyCoordinateTransformation

Since: GDAL 3.4

◆ OCTGetSourceCS()

OGRSpatialReferenceH OCTGetSourceCS ( OGRCoordinateTransformationH hTransform )

Transformation's source coordinate system reference.

This is the same as the C++ function OGRCreateCoordinateTransformation::GetSourceCS

Returns: handle to transformation's source coordinate system or NULL if not present.

The ownership of the returned SRS belongs to the transformation object, and the returned SRS should not be modified.

Since: GDAL 3.4

◆ OCTGetTargetCS()

OGRSpatialReferenceH OCTGetTargetCS ( OGRCoordinateTransformationH hTransform )

Transformation's target coordinate system reference.

This is the same as the C++ function OGRCreateCoordinateTransformation::GetTargetCS

Returns: handle to transformation's target coordinate system or NULL if not present.

The ownership of the returned SRS belongs to the transformation object, and the returned SRS should not be modified.

Since: GDAL 3.4

◆ OCTNewCoordinateTransformation()

OGRCoordinateTransformationH OCTNewCoordinateTransformation	(	OGRSpatialReferenceH	hSourceSRS,
		OGRSpatialReferenceH	hTargetSRS
	)

Create transformation object.

This is the same as the C++ function OGRCreateCoordinateTransformation(const OGRSpatialReference *, const OGRSpatialReference *)

Input spatial reference system objects are assigned by copy (calling clone() method) and no ownership transfer occurs.

OCTDestroyCoordinateTransformation() should be used to destroy transformation objects.

This will honour the axis order advertized by the source and target SRS, as well as their "data axis to SRS axis mapping". To have a behavior similar to GDAL < 3.0, the OGR_CT_FORCE_TRADITIONAL_GIS_ORDER configuration option can be set to YES.

Parameters

hSourceSRS	source spatial reference system.
hTargetSRS	target spatial reference system.

Returns: NULL on failure or a ready to use transformation object.

◆ OCTNewCoordinateTransformationEx()

OGRCoordinateTransformationH OCTNewCoordinateTransformationEx	(	OGRSpatialReferenceH	hSourceSRS,
		OGRSpatialReferenceH	hTargetSRS,
		OGRCoordinateTransformationOptionsH	hOptions
	)

Create transformation object.

This is the same as the C++ function OGRCreateCoordinateTransformation(const OGRSpatialReference *, const OGRSpatialReference *, const OGRCoordinateTransformationOptions& )

Input spatial reference system objects are assigned by copy (calling clone() method) and no ownership transfer occurs.

OCTDestroyCoordinateTransformation() should be used to destroy transformation objects.

The source SRS and target SRS should generally not be NULL. This is only allowed if a custom coordinate operation is set through the hOptions argument.

This will honour the axis order advertized by the source and target SRS, as well as their "data axis to SRS axis mapping". To have a behavior similar to GDAL < 3.0, the OGR_CT_FORCE_TRADITIONAL_GIS_ORDER configuration option can be set to YES.

If options contains a user defined coordinate transformation pipeline, it will be unconditionally used. If options has an area of interest defined, it will be used to research the best fitting coordinate transformation (which will be used for all coordinate transformations, even if they don't fall into the declared area of interest) If no options are set, then a list of candidate coordinate operations will be researched, and at each call to Transform(), the best of those candidate regarding the centroid of the coordinate set will be dynamically selected.

Parameters

hSourceSRS	source spatial reference system.
hTargetSRS	target spatial reference system.
hOptions	Coordinate transformation options.

Returns: NULL on failure or a ready to use transformation object.

Since: GDAL 3.0

◆ OCTNewCoordinateTransformationOptions()

OGRCoordinateTransformationOptionsH OCTNewCoordinateTransformationOptions ( void )

Create coordinate transformation options.

To be freed with OCTDestroyCoordinateTransformationOptions()

Since: GDAL 3.0

◆ OCTTransform()

int OCTTransform	(	OGRCoordinateTransformationH	hTransform,
		int	nCount,
		double *	x,
		double *	y,
		double *	z
	)

Transform an array of points.

Parameters

hTransform	Transformation object
nCount	Number of points
x	Array of nCount x values.
y	Array of nCount y values.
z	Array of nCount z values.

Returns: TRUE if a transformation could be found (but not all points may have necessarily succeed to transform), otherwise FALSE.

◆ OCTTransform4D()

int OCTTransform4D	(	OGRCoordinateTransformationH	hTransform,
		int	nCount,
		double *	x,
		double *	y,
		double *	z,
		double *	t,
		int *	pabSuccess
	)

Transform an array of points.

Parameters

hTransform	Transformation object
nCount	Number of points
x	Array of nCount x values. Should not be NULL
y	Array of nCount y values. Should not be NULL
z	Array of nCount z values. Might be NULL
t	Array of nCount time values. Might be NULL
pabSuccess	Output array of nCount value that will be set to TRUE/FALSE. Might be NULL.

Since: GDAL 3.0

Returns: TRUE if a transformation could be found (but not all points may have necessarily succeed to transform), otherwise FALSE.

◆ OCTTransform4DWithErrorCodes()

int OCTTransform4DWithErrorCodes	(	OGRCoordinateTransformationH	hTransform,
		int	nCount,
		double *	x,
		double *	y,
		double *	z,
		double *	t,
		int *	panErrorCodes
	)

Transform an array of points.

Parameters

hTransform	Transformation object
nCount	Number of points
x	Array of nCount x values. Should not be NULL
y	Array of nCount y values. Should not be NULL
z	Array of nCount z values. Might be NULL
t	Array of nCount time values. Might be NULL
panErrorCodes	Output array of nCount value that will be set to 0 for success, or a non-zero value for failure. Refer to PROJ 8 public error codes. Might be NULL

Since: GDAL 3.3, and PROJ 8 to be able to use PROJ public error codes

Returns: TRUE if a transformation could be found (but not all points may have necessarily succeed to transform), otherwise FALSE.

◆ OCTTransformBounds()

int OCTTransformBounds	(	OGRCoordinateTransformationH	hTransform,
		const double	xmin,
		const double	ymin,
		const double	xmax,
		const double	ymax,
		double *	out_xmin,
		double *	out_ymin,
		double *	out_xmax,
		double *	out_ymax,
		int	densify_pts
	)

Transform boundary.

Transform boundary densifying the edges to account for nonlinear transformations along these edges and extracting the outermost bounds.

If the destination CRS is geographic, the first axis is longitude, and xmax < xmin then the bounds crossed the antimeridian. In this scenario there are two polygons, one on each side of the antimeridian. The first polygon should be constructed with (xmin, ymin, 180, ymax) and the second with (-180, ymin, xmax, ymax).

If the destination CRS is geographic, the first axis is latitude, and ymax < ymin then the bounds crossed the antimeridian. In this scenario there are two polygons, one on each side of the antimeridian. The first polygon should be constructed with (ymin, xmin, ymax, 180) and the second with (ymin, -180, ymax, xmax).

Parameters

hTransform	Transformation object
xmin	Minimum bounding coordinate of the first axis in source CRS.
ymin	Minimum bounding coordinate of the second axis in source CRS.
xmax	Maximum bounding coordinate of the first axis in source CRS.
ymax	Maximum bounding coordinate of the second axis in source CRS.
out_xmin	Minimum bounding coordinate of the first axis in target CRS
out_ymin	Minimum bounding coordinate of the second axis in target CRS.
out_xmax	Maximum bounding coordinate of the first axis in target CRS.
out_ymax	Maximum bounding coordinate of the second axis in target CRS.
densify_pts	Recommended to use 21. This is the number of points to use to densify the bounding polygon in the transformation.

Returns: TRUE if successful. FALSE if failures encountered.

Since: 3.4

◆ OCTTransformEx()

int OCTTransformEx	(	OGRCoordinateTransformationH	hTransform,
		int	nCount,
		double *	x,
		double *	y,
		double *	z,
		int *	pabSuccess
	)

Transform an array of points.

Parameters

hTransform	Transformation object
nCount	Number of points
x	Array of nCount x values.
y	Array of nCount y values.
z	Array of nCount z values.
pabSuccess	Output array of nCount value that will be set to TRUE/FALSE

Returns: TRUE if a transformation could be found (but not all points may have necessarily succeed to transform), otherwise FALSE.

◆ OSRAddGuessedTOWGS84()

OGRErr OSRAddGuessedTOWGS84 ( OGRSpatialReferenceH hSRS )

Try to add a a 3-parameter or 7-parameter Helmert transformation to WGS84.

This function is the same as OGRSpatialReference::AddGuessedTOWGS84().

Since: GDAL 3.0.3

◆ OSRAutoIdentifyEPSG()

OGRErr OSRAutoIdentifyEPSG ( OGRSpatialReferenceH hSRS )

Set EPSG authority info if possible.

This function is the same as OGRSpatialReference::AutoIdentifyEPSG().

Since GDAL 2.3, the OSRFindMatches() function can also be used for improved matching by researching the EPSG catalog.

◆ OSRAxisEnumToName()

const char * OSRAxisEnumToName ( OGRAxisOrientation eOrientation )

Return the string representation for the OGRAxisOrientation enumeration.

For example "NORTH" for OAO_North.

Returns: an internal string

◆ OSRCalcInvFlattening()

double OSRCalcInvFlattening	(	double	dfSemiMajor,
		double	dfSemiMinor
	)

Compute inverse flattening from semi-major and semi-minor axis.

Parameters

dfSemiMajor	Semi-major axis length.
dfSemiMinor	Semi-minor axis length.

Returns: inverse flattening, or 0 if both axis are equal.

Since: GDAL 2.0

◆ OSRCalcSemiMinorFromInvFlattening()

double OSRCalcSemiMinorFromInvFlattening	(	double	dfSemiMajor,
		double	dfInvFlattening
	)

Compute semi-minor axis from semi-major axis and inverse flattening.

Parameters

dfSemiMajor	Semi-major axis length.
dfInvFlattening	Inverse flattening or 0 for sphere.

Returns: semi-minor axis

Since: GDAL 2.0

◆ OSRCleanup()

void OSRCleanup ( void )

Cleanup cached SRS related memory.

This function will attempt to cleanup any cache spatial reference related information, such as cached tables of coordinate systems.

This function should not be called concurrently with any other GDAL/OGR function. It is meant at being called once before process termination (typically from the main thread). CPLCleanupTLS() might be used to clean thread-specific resources before thread termination.

◆ OSRClone()

OGRSpatialReferenceH OSRClone ( OGRSpatialReferenceH hSRS )

Make a duplicate of this OGRSpatialReference.

This function is the same as OGRSpatialReference::Clone()

◆ OSRCloneGeogCS()

OGRSpatialReferenceH OSRCloneGeogCS ( OGRSpatialReferenceH hSource )

Make a duplicate of the GEOGCS node of this OGRSpatialReference object.

This function is the same as OGRSpatialReference::CloneGeogCS().

◆ OSRConvertToOtherProjection()

OGRSpatialReferenceH OSRConvertToOtherProjection	(	OGRSpatialReferenceH	hSRS,
		const char *	pszTargetProjection,
		const char const	papszOptions
	)

Convert to another equivalent projection.

Currently implemented:

SRS_PT_MERCATOR_1SP to SRS_PT_MERCATOR_2SP
SRS_PT_MERCATOR_2SP to SRS_PT_MERCATOR_1SP
SRS_PT_LAMBERT_CONFORMAL_CONIC_1SP to SRS_PT_LAMBERT_CONFORMAL_CONIC_2SP
SRS_PT_LAMBERT_CONFORMAL_CONIC_2SP to SRS_PT_LAMBERT_CONFORMAL_CONIC_1SP

Parameters

hSRS	source SRS
pszTargetProjection	target projection.
papszOptions	lists of options. None supported currently.

Returns: a new SRS, or NULL in case of error.

Since: GDAL 2.3

◆ OSRCopyGeogCSFrom()

OGRErr OSRCopyGeogCSFrom	(	OGRSpatialReferenceH	hSRS,
		const OGRSpatialReferenceH	hSrcSRS
	)

Copy GEOGCS from another OGRSpatialReference.

This function is the same as OGRSpatialReference::CopyGeogCSFrom()

◆ OSRDemoteTo2D()

OGRErr OSRDemoteTo2D	(	OGRSpatialReferenceH	hSRS,
		const char *	pszName
	)

"Demote" a 3D CRS to a 2D CRS one.

See OGRSpatialReference::DemoteTo2D()

Since: GDAL 3.2 and PROJ 6.3

◆ OSRDereference()

int OSRDereference ( OGRSpatialReferenceH hSRS )

Decrements the reference count by one.

This function is the same as OGRSpatialReference::Dereference()

◆ OSRDestroyCRSInfoList()

void OSRDestroyCRSInfoList ( OSRCRSInfo ** list )

Destroy the result returned by OSRGetCRSInfoListFromDatabase().

Since: GDAL 3.0

◆ OSRDestroySpatialReference()

void OSRDestroySpatialReference ( OGRSpatialReferenceH hSRS )

OGRSpatialReference destructor.

This function is the same as OGRSpatialReference::~OGRSpatialReference() and OGRSpatialReference::DestroySpatialReference()

Parameters

hSRS	the object to delete

◆ OSREPSGTreatsAsLatLong()

int OSREPSGTreatsAsLatLong ( OGRSpatialReferenceH hSRS )

This function returns TRUE if this geographic coordinate system should be treated as having lat/long coordinate ordering.

This function is the same as OGRSpatialReference::OSREPSGTreatsAsLatLong().

◆ OSREPSGTreatsAsNorthingEasting()

int OSREPSGTreatsAsNorthingEasting ( OGRSpatialReferenceH hSRS )

This function returns TRUE if this projected coordinate system should be treated as having northing/easting coordinate ordering.

This function is the same as OGRSpatialReference::EPSGTreatsAsNorthingEasting().

Since: OGR 1.10.0

◆ OSRExportToCF1()

OGRErr OSRExportToCF1	(	OGRSpatialReferenceH	hSRS,
		char **	ppszGridMappingName,
		char ***	ppapszKeyValues,
		char **	ppszUnits,
		CSLConstList	papszOptions
	)

Export a CRS to netCDF CF-1 definitions.

This function is the same as OGRSpatialReference::exportToCF1().

◆ OSRExportToERM()

OGRErr OSRExportToERM	(	OGRSpatialReferenceH	hSRS,
		char *	pszProj,
		char *	pszDatum,
		char *	pszUnits
	)

Convert coordinate system to ERMapper format.

This function is the same as OGRSpatialReference::exportToERM().

◆ OSRExportToMICoordSys()

OGRErr OSRExportToMICoordSys	(	OGRSpatialReferenceH	hSRS,
		char **	ppszReturn
	)

Export coordinate system in Mapinfo style CoordSys format.

This method is the equivalent of the C++ method OGRSpatialReference::exportToMICoordSys

◆ OSRExportToPanorama()

OGRErr OSRExportToPanorama	(	OGRSpatialReferenceH	hSRS,
		long *	piProjSys,
		long *	piDatum,
		long *	piEllips,
		long *	piZone,
		double *	padfPrjParams
	)

Export coordinate system in "Panorama" GIS projection definition.

See OGRSpatialReference::exportToPanorama()

◆ OSRExportToPCI()

OGRErr OSRExportToPCI	(	OGRSpatialReferenceH	hSRS,
		char **	ppszProj,
		char **	ppszUnits,
		double **	ppadfPrjParams
	)

Export coordinate system in PCI projection definition.

This function is the same as OGRSpatialReference::exportToPCI().

◆ OSRExportToPrettyWkt()

OGRErr OSRExportToPrettyWkt	(	OGRSpatialReferenceH	hSRS,
		char **	ppszReturn,
		int	bSimplify
	)

Convert this SRS into a nicely formatted WKT 1 string for display to a person.

The WKT version can be overridden by using the OSR_WKT_FORMAT configuration option. Valid values are the one of the FORMAT option of exportToWkt( char ** ppszResult, const char* const* papszOptions ) const

This function is the same as OGRSpatialReference::exportToPrettyWkt().

◆ OSRExportToProj4()

OGRErr OSRExportToProj4	(	OGRSpatialReferenceH	hSRS,
		char **	ppszReturn
	)

Export coordinate system in PROJ.4 legacy format.

Warning: Use of this function is discouraged. Its behavior in GDAL >= 3 / PROJ >= 6 is significantly different from earlier versions. In particular +datum will only encode WGS84, NAD27 and NAD83, and +towgs84/+nadgrids terms will be missing most of the time. PROJ strings to encode CRS should be considered as a legacy solution. Using a AUTHORITY:CODE or WKT representation is the recommended way.

This function is the same as OGRSpatialReference::exportToProj4().

◆ OSRExportToPROJJSON()

OGRErr OSRExportToPROJJSON	(	OGRSpatialReferenceH	hSRS,
		char **	ppszReturn,
		const char const	papszOptions
	)

Convert this SRS into PROJJSON format.

This function is the same as OGRSpatialReference::exportToPROJJSON() const

Since: GDAL 3.1 and PROJ 6.2

◆ OSRExportToUSGS()

OGRErr OSRExportToUSGS	(	OGRSpatialReferenceH	hSRS,
		long *	piProjSys,
		long *	piZone,
		double **	ppadfPrjParams,
		long *	piDatum
	)

Export coordinate system in USGS GCTP projection definition.

This function is the same as OGRSpatialReference::exportToUSGS().

◆ OSRExportToWkt()

OGRErr OSRExportToWkt	(	OGRSpatialReferenceH	hSRS,
		char **	ppszReturn
	)

Convert this SRS into WKT 1 format.

Consult also the OGC WKT Coordinate System Issues page for implementation details of WKT in OGR.

The WKT version can be overridden by using the OSR_WKT_FORMAT configuration option. Valid values are the one of the FORMAT option of exportToWkt( char ** ppszResult, const char* const* papszOptions ) const

This function is the same as OGRSpatialReference::exportToWkt().

◆ OSRExportToWktEx()

OGRErr OSRExportToWktEx	(	OGRSpatialReferenceH	hSRS,
		char **	ppszReturn,
		const char const	papszOptions
	)

Convert this SRS into WKT format.

This function is the same as OGRSpatialReference::exportToWkt(char ** ppszResult,const char* const* papszOptions ) const

Since: GDAL 3.0

◆ OSRExportToXML()

OGRErr OSRExportToXML	(	OGRSpatialReferenceH	hSRS,
		char **	ppszRawXML,
		const char *	pszDialect
	)

Export coordinate system in XML format.

This function is the same as OGRSpatialReference::exportToXML().

◆ OSRFindMatches()

OGRSpatialReferenceH * OSRFindMatches	(	OGRSpatialReferenceH	hSRS,
		char **	papszOptions,
		int *	pnEntries,
		int **	ppanMatchConfidence
	)

Try to identify a match between the passed SRS and a related SRS in a catalog.

Matching may be partial, or may fail. Returned entries will be sorted by decreasing match confidence (first entry has the highest match confidence).

The exact way matching is done may change in future versions. Starting with GDAL 3.0, it relies on PROJ' proj_identify() function.

This function is the same as OGRSpatialReference::FindMatches().

Parameters

hSRS	SRS to match
papszOptions	NULL terminated list of options or NULL
pnEntries	Output parameter. Number of values in the returned array.
ppanMatchConfidence	Output parameter (or NULL). ppanMatchConfidence will be allocated to an array of pnEntries whose values between 0 and 100 indicate the confidence in the match. 100 is the highest confidence level. The array must be freed with CPLFree().

Returns: an array of SRS that match the passed SRS, or NULL. Must be freed with OSRFreeSRSArray()

Since: GDAL 2.3

◆ OSRFreeSRSArray()

void OSRFreeSRSArray ( OGRSpatialReferenceH * pahSRS )

Free return of OSRIdentifyMatches()

Parameters

pahSRS array of SRS (must be NULL terminated)

Since: GDAL 2.3

◆ OSRGetAngularUnits()

double OSRGetAngularUnits	(	OGRSpatialReferenceH	hSRS,
		char **	ppszName
	)

Fetch angular geographic coordinate system units.

This function is the same as OGRSpatialReference::GetAngularUnits()

◆ OSRGetAreaOfUse()

int OSRGetAreaOfUse	(	OGRSpatialReferenceH	hSRS,
		double *	pdfWestLongitudeDeg,
		double *	pdfSouthLatitudeDeg,
		double *	pdfEastLongitudeDeg,
		double *	pdfNorthLatitudeDeg,
		const char **	ppszAreaName
	)

Return the area of use of the CRS.

This function is the same as the OGRSpatialReference::GetAreaOfUse() method.

Since: GDAL 3.0

◆ OSRGetAttrValue()

const char * OSRGetAttrValue	(	OGRSpatialReferenceH	hSRS,
		const char *	pszKey,
		int	iChild
	)

Fetch indicated attribute of named node.

This function is the same as OGRSpatialReference::GetAttrValue()

◆ OSRGetAuthorityCode()

const char * OSRGetAuthorityCode	(	OGRSpatialReferenceH	hSRS,
		const char *	pszTargetKey
	)

Get the authority code for a node.

This function is the same as OGRSpatialReference::GetAuthorityCode().

◆ OSRGetAuthorityName()

const char * OSRGetAuthorityName	(	OGRSpatialReferenceH	hSRS,
		const char *	pszTargetKey
	)

Get the authority name for a node.

This function is the same as OGRSpatialReference::GetAuthorityName().

◆ OSRGetAxesCount()

int OSRGetAxesCount ( OGRSpatialReferenceH hSRS )

Return the number of axis of the coordinate system of the CRS.

This method is the equivalent of the C++ method OGRSpatialReference::GetAxesCount()

Since: GDAL 3.1

◆ OSRGetAxis()

const char * OSRGetAxis	(	OGRSpatialReferenceH	hSRS,
		const char *	pszTargetKey,
		int	iAxis,
		OGRAxisOrientation *	peOrientation
	)

Fetch the orientation of one axis.

This method is the equivalent of the C++ method OGRSpatialReference::GetAxis

◆ OSRGetAxisMappingStrategy()

OSRAxisMappingStrategy OSRGetAxisMappingStrategy ( OGRSpatialReferenceH hSRS )

Return the data axis to CRS axis mapping strategy.

See OGRSpatialReference::GetAxisMappingStrategy()

Since: GDAL 3.0

◆ OSRGetCoordinateEpoch()

double OSRGetCoordinateEpoch ( OGRSpatialReferenceH hSRS )

Get the coordinate epoch, as decimal year.

See OGRSpatialReference::GetCoordinateEpoch()

Since: OGR 3.4

◆ OSRGetCRSInfoListFromDatabase()

OSRCRSInfo ** OSRGetCRSInfoListFromDatabase	(	const char *	pszAuthName,
		const OSRCRSListParameters *	params,
		int *	pnOutResultCount
	)

Enumerate CRS objects from the database.

The returned object is an array of OSRCRSInfo* pointers, whose last entry is NULL. This array should be freed with OSRDestroyCRSInfoList()

Parameters

pszAuthName	Authority name, used to restrict the search. Or NULL for all authorities.
params	Additional criteria. Must be set to NULL for now.
pnOutResultCount	Output parameter pointing to an integer to receive the size of the result list. Might be NULL

Returns: an array of OSRCRSInfo* pointers to be freed with OSRDestroyCRSInfoList(), or NULL in case of error.

Since: GDAL 3.0

◆ OSRGetDataAxisToSRSAxisMapping()

const int * OSRGetDataAxisToSRSAxisMapping	(	OGRSpatialReferenceH	hSRS,
		int *	pnCount
	)

Return the data axis to SRS axis mapping.

See OGRSpatialReference::GetDataAxisToSRSAxisMapping()

Since: GDAL 3.0

◆ OSRGetInvFlattening()

double OSRGetInvFlattening	(	OGRSpatialReferenceH	hSRS,
		OGRErr *	pnErr
	)

Get spheroid inverse flattening.

This function is the same as OGRSpatialReference::GetInvFlattening()

◆ OSRGetLinearUnits()

double OSRGetLinearUnits	(	OGRSpatialReferenceH	hSRS,
		char **	ppszName
	)

Fetch linear projection units.

This function is the same as OGRSpatialReference::GetLinearUnits()

◆ OSRGetName()

const char * OSRGetName ( OGRSpatialReferenceH hSRS )

Return the CRS name.

The returned value is only short lived and should not be used after other calls to methods on this object.

Since: GDAL 3.0

◆ OSRGetNormProjParm()

double OSRGetNormProjParm	(	OGRSpatialReferenceH	hSRS,
		const char *	pszName,
		double	dfDefaultValue,
		OGRErr *	pnErr
	)

This function is the same as OGRSpatialReference::

This function is the same as OGRSpatialReference::GetNormProjParm()

◆ OSRGetPrimeMeridian()

double OSRGetPrimeMeridian	(	OGRSpatialReferenceH	hSRS,
		char **	ppszName
	)

Fetch prime meridian info.

This function is the same as OGRSpatialReference::GetPrimeMeridian()

◆ OSRGetPROJAuxDbPaths()

char ** OSRGetPROJAuxDbPaths ( void )

Get PROJ auxiliary database filenames.

Returns: NULL terminated list of PROJ auxiliary database filenames. To be freed with CSLDestroy()

Since: GDAL 3.3.0

See also: OSRSetPROJAuxDbPaths, proj_context_set_database_path

◆ OSRGetPROJEnableNetwork()

int OSRGetPROJEnableNetwork ( void )

Get whether PROJ networking capabilities are enabled.

Returns: TRUE if PROJ networking capabilities are enabled.

Since: GDAL 3.4 and PROJ 7

See also: OSRSetPROJEnableNetwork, proj_context_is_network_enabled

◆ OSRGetProjParm()

double OSRGetProjParm	(	OGRSpatialReferenceH	hSRS,
		const char *	pszName,
		double	dfDefaultValue,
		OGRErr *	pnErr
	)

Fetch a projection parameter value.

This function is the same as OGRSpatialReference::GetProjParm()

◆ OSRGetPROJSearchPaths()

char ** OSRGetPROJSearchPaths ( void )

Get the search path(s) for PROJ resource files.

Returns: NULL terminated list of directory paths. To be freed with CSLDestroy()

Since: GDAL 3.0.3

◆ OSRGetPROJVersion()

void OSRGetPROJVersion	(	int *	pnMajor,
		int *	pnMinor,
		int *	pnPatch
	)

Get the PROJ version.

Parameters

pnMajor	Pointer to major version number, or NULL
pnMinor	Pointer to minor version number, or NULL
pnPatch	Pointer to patch version number, or NULL

Since: GDAL 3.0.1

◆ OSRGetSemiMajor()

double OSRGetSemiMajor	(	OGRSpatialReferenceH	hSRS,
		OGRErr *	pnErr
	)

Get spheroid semi major axis.

This function is the same as OGRSpatialReference::GetSemiMajor()

◆ OSRGetSemiMinor()

double OSRGetSemiMinor	(	OGRSpatialReferenceH	hSRS,
		OGRErr *	pnErr
	)

Get spheroid semi minor axis.

This function is the same as OGRSpatialReference::GetSemiMinor()

◆ OSRGetTargetLinearUnits()

double OSRGetTargetLinearUnits	(	OGRSpatialReferenceH	hSRS,
		const char *	pszTargetKey,
		char **	ppszName
	)

Fetch linear projection units.

This function is the same as OGRSpatialReference::GetTargetLinearUnits()

Since: OGR 1.9.0

◆ OSRGetTOWGS84()

OGRErr OSRGetTOWGS84	(	OGRSpatialReferenceH	hSRS,
		double *	padfCoeff,
		int	nCoeffCount
	)

Fetch TOWGS84 parameters, if available.

This function is the same as OGRSpatialReference::GetTOWGS84().

◆ OSRGetUTMZone()

int OSRGetUTMZone	(	OGRSpatialReferenceH	hSRS,
		int *	pbNorth
	)

Get utm zone information.

This is the same as the C++ method OGRSpatialReference::GetUTMZone()

◆ OSRHasPointMotionOperation()

int OSRHasPointMotionOperation ( OGRSpatialReferenceH hSRS )

Check if a CRS has at least an associated point motion operation.

Some CRS are not formally declared as dynamic, but may behave as such in practice due to the prsence of point motion operation, to perform coordinate epoch changes within the CRS. Typically NAD83(CSRS)v7

This function is the same as OGRSpatialReference::HasPointMotionOperation().

Since: OGR 3.8.0 and PROJ 9.4.0

◆ OSRImportFromCF1()

OGRErr OSRImportFromCF1	(	OGRSpatialReferenceH	hSRS,
		CSLConstList	papszKeyValues,
		const char *	pszUnits
	)

Import a CRS from netCDF CF-1 definitions.

This function is the same as OGRSpatialReference::importFromCF1().

Since: 3.9

◆ OSRImportFromDict()

OGRErr OSRImportFromDict	(	OGRSpatialReferenceH	hSRS,
		const char *	pszDictFile,
		const char *	pszCode
	)

Read SRS from WKT dictionary.

This method will attempt to find the indicated coordinate system identity in the indicated dictionary file. If found, the WKT representation is imported and used to initialize this OGRSpatialReference.

More complete information on the format of the dictionary files can be found in the epsg.wkt file in the GDAL data tree. The dictionary files are searched for in the "GDAL" domain using CPLFindFile(). Normally this results in searching /usr/local/share/gdal or somewhere similar.

This method is the same as the C++ method OGRSpatialReference::importFromDict().

Parameters

hSRS	spatial reference system handle.
pszDictFile	the name of the dictionary file to load.
pszCode	the code to lookup in the dictionary.

Returns: OGRERR_NONE on success, or OGRERR_SRS_UNSUPPORTED if the code isn't found, and OGRERR_SRS_FAILURE if something more dramatic goes wrong.

◆ OSRImportFromEPSG()

OGRErr OSRImportFromEPSG	(	OGRSpatialReferenceH	hSRS,
		int	nCode
	)

Initialize SRS based on EPSG geographic, projected or vertical CRS code.

This function is the same as OGRSpatialReference::importFromEPSG().

◆ OSRImportFromEPSGA()

OGRErr OSRImportFromEPSGA	(	OGRSpatialReferenceH	hSRS,
		int	nCode
	)

Initialize SRS based on EPSG geographic, projected or vertical CRS code.

This function is the same as OGRSpatialReference::importFromEPSGA().

◆ OSRImportFromERM()

OGRErr OSRImportFromERM	(	OGRSpatialReferenceH	hSRS,
		const char *	pszProj,
		const char *	pszDatum,
		const char *	pszUnits
	)

Create OGR WKT from ERMapper projection definitions.

This function is the same as OGRSpatialReference::importFromERM().

◆ OSRImportFromESRI()

OGRErr OSRImportFromESRI	(	OGRSpatialReferenceH	hSRS,
		char **	papszPrj
	)

Import coordinate system from ESRI .prj format(s).

This function is the same as the C++ method OGRSpatialReference::importFromESRI().

◆ OSRImportFromMICoordSys()

OGRErr OSRImportFromMICoordSys	(	OGRSpatialReferenceH	hSRS,
		const char *	pszCoordSys
	)

Import Mapinfo style CoordSys definition.

This method is the equivalent of the C++ method OGRSpatialReference::importFromMICoordSys

◆ OSRImportFromOzi()

OGRErr OSRImportFromOzi	(	OGRSpatialReferenceH	hSRS,
		const char const	papszLines
	)

Import coordinate system from OziExplorer projection definition.

This function will import projection definition in style, used by OziExplorer software.

Note: another version of this function with a different signature existed in GDAL 1.X.

Parameters

hSRS	spatial reference object.
papszLines	Map file lines. This is an array of strings containing the whole OziExplorer .MAP file. The array is terminated by a NULL pointer.

Returns: OGRERR_NONE on success or an error code in case of failure.

Since: OGR 2.0

◆ OSRImportFromPanorama()

OGRErr OSRImportFromPanorama	(	OGRSpatialReferenceH	hSRS,
		long	iProjSys,
		long	iDatum,
		long	iEllips,
		double *	padfPrjParams
	)

Import coordinate system from "Panorama" GIS projection definition.

See OGRSpatialReference::importFromPanorama()

◆ OSRImportFromPCI()

OGRErr OSRImportFromPCI	(	OGRSpatialReferenceH	hSRS,
		const char *	pszProj,
		const char *	pszUnits,
		double *	padfPrjParams
	)

Import coordinate system from PCI projection definition.

This function is the same as OGRSpatialReference::importFromPCI().

◆ OSRImportFromProj4()

OGRErr OSRImportFromProj4	(	OGRSpatialReferenceH	hSRS,
		const char *	pszProj4
	)

Import PROJ coordinate string.

This function is the same as OGRSpatialReference::importFromProj4().

◆ OSRImportFromUrl()

OGRErr OSRImportFromUrl	(	OGRSpatialReferenceH	hSRS,
		const char *	pszUrl
	)

Set spatial reference from a URL.

This function is the same as OGRSpatialReference::importFromUrl()

◆ OSRImportFromUSGS()

OGRErr OSRImportFromUSGS	(	OGRSpatialReferenceH	hSRS,
		long	iProjsys,
		long	iZone,
		double *	padfPrjParams,
		long	iDatum
	)

Import coordinate system from USGS projection definition.

This function is the same as OGRSpatialReference::importFromUSGS().

◆ OSRImportFromWkt()

OGRErr OSRImportFromWkt	(	OGRSpatialReferenceH	hSRS,
		char **	ppszInput
	)

Import from WKT string.

Consult also the OGC WKT Coordinate System Issues page for implementation details of WKT in OGR.

This function is the same as OGRSpatialReference::importFromWkt().

◆ OSRImportFromXML()

OGRErr OSRImportFromXML	(	OGRSpatialReferenceH	hSRS,
		const char *	pszXML
	)

Import coordinate system from XML format (GML only currently).

This function is the same as OGRSpatialReference::importFromXML().

◆ OSRIsCompound()

int OSRIsCompound ( OGRSpatialReferenceH hSRS )

Check if the coordinate system is compound.

This function is the same as OGRSpatialReference::IsCompound().

◆ OSRIsDerivedGeographic()

int OSRIsDerivedGeographic ( OGRSpatialReferenceH hSRS )

Check if the CRS is a derived geographic coordinate system.

(for example a rotated long/lat grid)

This function is the same as OGRSpatialReference::IsDerivedGeographic().

◆ OSRIsDerivedProjected()

int OSRIsDerivedProjected ( OGRSpatialReferenceH hSRS )

Check if the CRS is a derived projected coordinate system.

This function is the same as OGRSpatialReference::IsDerivedProjected().

Since: GDAL 3.9.0 (and may only return non-zero starting with PROJ 9.2.0)

◆ OSRIsDynamic()

int OSRIsDynamic ( OGRSpatialReferenceH hSRS )

Check if a CRS is a dynamic CRS.

A dynamic CRS relies on a dynamic datum, that is a datum that is not plate-fixed.

This function is the same as OGRSpatialReference::IsDynamic().

Since: OGR 3.4.0

◆ OSRIsGeocentric()

int OSRIsGeocentric ( OGRSpatialReferenceH hSRS )

Check if geocentric coordinate system.

This function is the same as OGRSpatialReference::IsGeocentric().

Since: OGR 1.9.0

◆ OSRIsGeographic()

int OSRIsGeographic ( OGRSpatialReferenceH hSRS )

Check if geographic coordinate system.

This function is the same as OGRSpatialReference::IsGeographic().

◆ OSRIsLocal()

int OSRIsLocal ( OGRSpatialReferenceH hSRS )

Check if local coordinate system.

This function is the same as OGRSpatialReference::IsLocal().

◆ OSRIsProjected()

int OSRIsProjected ( OGRSpatialReferenceH hSRS )

Check if projected coordinate system.

This function is the same as OGRSpatialReference::IsProjected().

◆ OSRIsSame()

int OSRIsSame	(	OGRSpatialReferenceH	hSRS1,
		OGRSpatialReferenceH	hSRS2
	)

Do these two spatial references describe the same system ?

This function is the same as OGRSpatialReference::IsSame().

◆ OSRIsSameEx()

int OSRIsSameEx	(	OGRSpatialReferenceH	hSRS1,
		OGRSpatialReferenceH	hSRS2,
		const char const	papszOptions
	)

Do these two spatial references describe the same system ?

This function is the same as OGRSpatialReference::IsSame().

◆ OSRIsSameGeogCS()

int OSRIsSameGeogCS	(	OGRSpatialReferenceH	hSRS1,
		OGRSpatialReferenceH	hSRS2
	)

Do the GeogCS'es match?

This function is the same as OGRSpatialReference::IsSameGeogCS().

◆ OSRIsSameVertCS()

int OSRIsSameVertCS	(	OGRSpatialReferenceH	hSRS1,
		OGRSpatialReferenceH	hSRS2
	)

Do the VertCS'es match?

This function is the same as OGRSpatialReference::IsSameVertCS().

◆ OSRIsVertical()

int OSRIsVertical ( OGRSpatialReferenceH hSRS )

Check if vertical coordinate system.

This function is the same as OGRSpatialReference::IsVertical().

Since: OGR 1.8.0

◆ OSRMorphFromESRI()

OGRErr OSRMorphFromESRI ( OGRSpatialReferenceH hSRS )

Convert in place from ESRI WKT format.

This function is the same as the C++ method OGRSpatialReference::morphFromESRI().

◆ OSRMorphToESRI()

OGRErr OSRMorphToESRI ( OGRSpatialReferenceH hSRS )

Convert in place to ESRI WKT format.

This function is the same as the C++ method OGRSpatialReference::morphToESRI().

◆ OSRNewSpatialReference()

OGRSpatialReferenceH OSRNewSpatialReference ( const char * pszWKT )

Constructor.

Starting with GDAL 3.0, coordinates associated with a OGRSpatialReference object are assumed to be in the order of the axis of the CRS definition (which for example means latitude first, longitude second for geographic CRS belonging to the EPSG authority). It is possible to define a data axis to CRS axis mapping strategy with the SetAxisMappingStrategy() method.

Starting with GDAL 3.5, the OSR_DEFAULT_AXIS_MAPPING_STRATEGY configuration option can be set to "TRADITIONAL_GIS_ORDER" / "AUTHORITY_COMPLIANT" (the later being the default value when the option is not set) to control the value of the data axis to CRS axis mapping strategy when a OSRSpatialReference object is created. Calling SetAxisMappingStrategy() will override this default value.

This function is the same as OGRSpatialReference::OGRSpatialReference()

◆ OSRPromoteTo3D()

OGRErr OSRPromoteTo3D	(	OGRSpatialReferenceH	hSRS,
		const char *	pszName
	)

"Promotes" a 2D CRS to a 3D CRS one.

See OGRSpatialReference::PromoteTo3D()

Since: GDAL 3.1 and PROJ 6.3

◆ OSRReference()

int OSRReference ( OGRSpatialReferenceH hSRS )

Increments the reference count by one.

This function is the same as OGRSpatialReference::Reference()

◆ OSRRelease()

void OSRRelease ( OGRSpatialReferenceH hSRS )

Decrements the reference count by one, and destroy if zero.

This function is the same as OGRSpatialReference::Release()

◆ OSRSetAngularUnits()

OGRErr OSRSetAngularUnits	(	OGRSpatialReferenceH	hSRS,
		const char *	pszUnits,
		double	dfInRadians
	)

Set the angular units for the geographic coordinate system.

This function is the same as OGRSpatialReference::SetAngularUnits()

◆ OSRSetAttrValue()

OGRErr OSRSetAttrValue	(	OGRSpatialReferenceH	hSRS,
		const char *	pszPath,
		const char *	pszValue
	)

Set attribute value in spatial reference.

This function is the same as OGRSpatialReference::SetNode()

◆ OSRSetAuthority()

OGRErr OSRSetAuthority	(	OGRSpatialReferenceH	hSRS,
		const char *	pszTargetKey,
		const char *	pszAuthority,
		int	nCode
	)

Set the authority for a node.

This function is the same as OGRSpatialReference::SetAuthority().

◆ OSRSetAxes()

OGRErr OSRSetAxes	(	OGRSpatialReferenceH	hSRS,
		const char *	pszTargetKey,
		const char *	pszXAxisName,
		OGRAxisOrientation	eXAxisOrientation,
		const char *	pszYAxisName,
		OGRAxisOrientation	eYAxisOrientation
	)

Set the axes for a coordinate system.

This method is the equivalent of the C++ method OGRSpatialReference::SetAxes

◆ OSRSetAxisMappingStrategy()

void OSRSetAxisMappingStrategy	(	OGRSpatialReferenceH	hSRS,
		OSRAxisMappingStrategy	strategy
	)

Set the data axis to CRS axis mapping strategy.

See OGRSpatialReference::SetAxisMappingStrategy()

Since: GDAL 3.0

◆ OSRSetCompoundCS()

OGRErr OSRSetCompoundCS	(	OGRSpatialReferenceH	hSRS,
		const char *	pszName,
		OGRSpatialReferenceH	hHorizSRS,
		OGRSpatialReferenceH	hVertSRS
	)

Setup a compound coordinate system.

This function is the same as OGRSpatialReference::SetCompoundCS()

◆ OSRSetCoordinateEpoch()

void OSRSetCoordinateEpoch	(	OGRSpatialReferenceH	hSRS,
		double	dfCoordinateEpoch
	)

Set the coordinate epoch, as decimal year.

See OGRSpatialReference::SetCoordinateEpoch()

Since: OGR 3.4

◆ OSRSetDataAxisToSRSAxisMapping()

OGRErr OSRSetDataAxisToSRSAxisMapping	(	OGRSpatialReferenceH	hSRS,
		int	nMappingSize,
		const int *	panMapping
	)

Set a custom data axis to CRS axis mapping.

Automatically implies SetAxisMappingStrategy(OAMS_CUSTOM)

This is the same as the C++ method OGRSpatialReference::SetDataAxisToSRSAxisMapping()

Since: GDAL 3.1

◆ OSRSetFromUserInput()

OGRErr OSRSetFromUserInput	(	OGRSpatialReferenceH	hSRS,
		const char *	pszDef
	)

Set spatial reference from various text formats.

This function is the same as OGRSpatialReference::SetFromUserInput()

See also: OSRSetFromUserInputEx() for a variant allowing to pass options.

◆ OSRSetFromUserInputEx()

OGRErr OSRSetFromUserInputEx	(	OGRSpatialReferenceH	hSRS,
		const char *	pszDef,
		CSLConstList	papszOptions
	)

Set spatial reference from various text formats.

This function is the same as OGRSpatialReference::SetFromUserInput().

Since: GDAL 3.9

◆ OSRSetGeocCS()

OGRErr OSRSetGeocCS	(	OGRSpatialReferenceH	hSRS,
		const char *	pszName
	)

Set the user visible PROJCS name.

This function is the same as OGRSpatialReference::SetGeocCS()

Since: OGR 1.9.0

◆ OSRSetGeogCS()

OGRErr OSRSetGeogCS	(	OGRSpatialReferenceH	hSRS,
		const char *	pszGeogName,
		const char *	pszDatumName,
		const char *	pszSpheroidName,
		double	dfSemiMajor,
		double	dfInvFlattening,
		const char *	pszPMName,
		double	dfPMOffset,
		const char *	pszAngularUnits,
		double	dfConvertToRadians
	)

Set geographic coordinate system.

This function is the same as OGRSpatialReference::SetGeogCS()

◆ OSRSetHOM()

OGRErr OSRSetHOM	(	OGRSpatialReferenceH	hSRS,
		double	dfCenterLat,
		double	dfCenterLong,
		double	dfAzimuth,
		double	dfRectToSkew,
		double	dfScale,
		double	dfFalseEasting,
		double	dfFalseNorthing
	)

Hotine Oblique Mercator using azimuth angle.

This is the same as the C++ method OGRSpatialReference::SetHOM()

◆ OSRSetHOM2PNO()

OGRErr OSRSetHOM2PNO	(	OGRSpatialReferenceH	hSRS,
		double	dfCenterLat,
		double	dfLat1,
		double	dfLong1,
		double	dfLat2,
		double	dfLong2,
		double	dfScale,
		double	dfFalseEasting,
		double	dfFalseNorthing
	)

Hotine Oblique Mercator using two points on centerline.

This is the same as the C++ method OGRSpatialReference::SetHOM2PNO()

◆ OSRSetHOMAC()

OGRErr OSRSetHOMAC	(	OGRSpatialReferenceH	hSRS,
		double	dfCenterLat,
		double	dfCenterLong,
		double	dfAzimuth,
		double	dfRectToSkew,
		double	dfScale,
		double	dfFalseEasting,
		double	dfFalseNorthing
	)

Set an Oblique Mercator projection using azimuth angle.

This is the same as the C++ method OGRSpatialReference::SetHOMAC()

◆ OSRSetLinearUnits()

OGRErr OSRSetLinearUnits	(	OGRSpatialReferenceH	hSRS,
		const char *	pszUnits,
		double	dfInMeters
	)

Set the linear units for the projection.

This function is the same as OGRSpatialReference::SetLinearUnits()

◆ OSRSetLinearUnitsAndUpdateParameters()

OGRErr OSRSetLinearUnitsAndUpdateParameters	(	OGRSpatialReferenceH	hSRS,
		const char *	pszUnits,
		double	dfInMeters
	)

Set the linear units for the projection.

This function is the same as OGRSpatialReference::SetLinearUnitsAndUpdateParameters()

◆ OSRSetLocalCS()

OGRErr OSRSetLocalCS	(	OGRSpatialReferenceH	hSRS,
		const char *	pszName
	)

Set the user visible LOCAL_CS name.

This function is the same as OGRSpatialReference::SetLocalCS()

◆ OSRSetNormProjParm()

OGRErr OSRSetNormProjParm	(	OGRSpatialReferenceH	hSRS,
		const char *	pszParamName,
		double	dfValue
	)

Set a projection parameter with a normalized value.

This function is the same as OGRSpatialReference::SetNormProjParm()

◆ OSRSetPROJAuxDbPaths()

void OSRSetPROJAuxDbPaths ( const char *const * papszAux )

Set list of PROJ auxiliary database filenames.

Parameters

papszAux NULL-terminated list of auxiliary database filenames, or NULL

Since: GDAL 3.3

See also: OSRGetPROJAuxDbPaths, proj_context_set_database_path

◆ OSRSetProjCS()

OGRErr OSRSetProjCS	(	OGRSpatialReferenceH	hSRS,
		const char *	pszName
	)

Set the user visible PROJCS name.

This function is the same as OGRSpatialReference::SetProjCS()

◆ OSRSetProjection()

OGRErr OSRSetProjection	(	OGRSpatialReferenceH	hSRS,
		const char *	pszProjection
	)

Set a projection name.

This function is the same as OGRSpatialReference::SetProjection()

◆ OSRSetPROJEnableNetwork()

void OSRSetPROJEnableNetwork ( int enabled )

Enable or disable PROJ networking capabilities.

Parameters

enabled Set to TRUE to enable networking capabilities.

Since: GDAL 3.4 and PROJ 7

See also: OSRGetPROJEnableNetwork, proj_context_set_enable_network

◆ OSRSetProjParm()

OGRErr OSRSetProjParm	(	OGRSpatialReferenceH	hSRS,
		const char *	pszParamName,
		double	dfValue
	)

Set a projection parameter value.

This function is the same as OGRSpatialReference::SetProjParm()

◆ OSRSetPROJSearchPaths()

void OSRSetPROJSearchPaths ( const char *const * papszPaths )

Set the search path(s) for PROJ resource files.

Note: starting with GDAL 3.7, CPLSetConfigOption("PROJ_DATA", ...) can also been used for the same effect.

Parameters

papszPaths NULL terminated list of directory paths.

Since: GDAL 3.0

◆ OSRSetStatePlane()

OGRErr OSRSetStatePlane	(	OGRSpatialReferenceH	hSRS,
		int	nZone,
		int	bNAD83
	)

Set State Plane projection definition.

This function is the same as OGRSpatialReference::SetStatePlane().

◆ OSRSetStatePlaneWithUnits()

OGRErr OSRSetStatePlaneWithUnits	(	OGRSpatialReferenceH	hSRS,
		int	nZone,
		int	bNAD83,
		const char *	pszOverrideUnitName,
		double	dfOverrideUnit
	)

Set State Plane projection definition.

This function is the same as OGRSpatialReference::SetStatePlane().

◆ OSRSetTargetLinearUnits()

OGRErr OSRSetTargetLinearUnits	(	OGRSpatialReferenceH	hSRS,
		const char *	pszTargetKey,
		const char *	pszUnits,
		double	dfInMeters
	)

Set the linear units for the target node.

This function is the same as OGRSpatialReference::SetTargetLinearUnits()

Since: OGR 1.9.0

◆ OSRSetTM()

OGRErr OSRSetTM	(	OGRSpatialReferenceH	hSRS,
		double	dfCenterLat,
		double	dfCenterLong,
		double	dfScale,
		double	dfFalseEasting,
		double	dfFalseNorthing
	)

Transverse Mercator.

Special processing available for Transverse Mercator with GDAL >= 1.10 and PROJ >= 4.8 : see OGRSpatialReference::exportToProj4().

◆ OSRSetTOWGS84()

OGRErr OSRSetTOWGS84	(	OGRSpatialReferenceH	hSRS,
		double	dfDX,
		double	dfDY,
		double	dfDZ,
		double	dfEX,
		double	dfEY,
		double	dfEZ,
		double	dfPPM
	)

Set the Bursa-Wolf conversion to WGS84.

This function is the same as OGRSpatialReference::SetTOWGS84().

◆ OSRSetUTM()

OGRErr OSRSetUTM	(	OGRSpatialReferenceH	hSRS,
		int	nZone,
		int	bNorth
	)

Set UTM projection definition.

This is the same as the C++ method OGRSpatialReference::SetUTM()

◆ OSRSetVertCS()

OGRErr OSRSetVertCS	(	OGRSpatialReferenceH	hSRS,
		const char *	pszVertCSName,
		const char *	pszVertDatumName,
		int	nVertDatumType
	)

Setup the vertical coordinate system.

This function is the same as OGRSpatialReference::SetVertCS()

Since: OGR 1.9.0

◆ OSRSetWellKnownGeogCS()

OGRErr OSRSetWellKnownGeogCS	(	OGRSpatialReferenceH	hSRS,
		const char *	pszName
	)

Set a GeogCS based on well known name.

This function is the same as OGRSpatialReference::SetWellKnownGeogCS()

◆ OSRStripVertical()

OGRErr OSRStripVertical ( OGRSpatialReferenceH hSRS )

Convert a compound cs into a horizontal CS.

This function is the same as the C++ method OGRSpatialReference::StripVertical().

◆ OSRValidate()

OGRErr OSRValidate ( OGRSpatialReferenceH hSRS )

Validate SRS tokens.

This function is the same as the C++ method OGRSpatialReference::Validate().

Classes

Macros

Typedefs

Enumerations

Functions

Detailed Description

Macro Definition Documentation

◆ SRS_WKT_WGS84_LAT_LONG

Typedef Documentation

◆ OSRCRSListParameters

Enumeration Type Documentation

◆ OGRAxisOrientation

◆ OSRAxisMappingStrategy

◆ OSRCRSType

Function Documentation

◆ OCTClone()

◆ OCTCoordinateTransformationOptionsSetAreaOfInterest()

◆ OCTCoordinateTransformationOptionsSetBallparkAllowed()

◆ OCTCoordinateTransformationOptionsSetDesiredAccuracy()

◆ OCTCoordinateTransformationOptionsSetOnlyBest()

◆ OCTCoordinateTransformationOptionsSetOperation()

◆ OCTDestroyCoordinateTransformation()

◆ OCTDestroyCoordinateTransformationOptions()

◆ OCTGetInverse()

◆ OCTGetSourceCS()

◆ OCTGetTargetCS()

◆ OCTNewCoordinateTransformation()

◆ OCTNewCoordinateTransformationEx()

◆ OCTNewCoordinateTransformationOptions()

◆ OCTTransform()

◆ OCTTransform4D()

◆ OCTTransform4DWithErrorCodes()

◆ OCTTransformBounds()

◆ OCTTransformEx()

◆ OSRAddGuessedTOWGS84()

◆ OSRAutoIdentifyEPSG()

◆ OSRAxisEnumToName()

◆ OSRCalcInvFlattening()

◆ OSRCalcSemiMinorFromInvFlattening()

◆ OSRCleanup()

◆ OSRClone()

◆ OSRCloneGeogCS()

◆ OSRConvertToOtherProjection()

◆ OSRCopyGeogCSFrom()

◆ OSRDemoteTo2D()

◆ OSRDereference()

◆ OSRDestroyCRSInfoList()

◆ OSRDestroySpatialReference()

◆ OSREPSGTreatsAsLatLong()

◆ OSREPSGTreatsAsNorthingEasting()

◆ OSRExportToCF1()

◆ OSRExportToERM()

◆ OSRExportToMICoordSys()

◆ OSRExportToPanorama()

◆ OSRExportToPCI()

◆ OSRExportToPrettyWkt()

◆ OSRExportToProj4()

◆ OSRExportToPROJJSON()

◆ OSRExportToUSGS()

◆ OSRExportToWkt()

◆ OSRExportToWktEx()

◆ OSRExportToXML()

◆ OSRFindMatches()

◆ OSRFreeSRSArray()

◆ OSRGetAngularUnits()

◆ OSRGetAreaOfUse()

◆ OSRGetAttrValue()

◆ OSRGetAuthorityCode()

◆ OSRGetAuthorityName()

◆ OSRGetAxesCount()

◆ OSRGetAxis()

◆ OSRGetAxisMappingStrategy()

◆ OSRGetCoordinateEpoch()

◆ OSRGetCRSInfoListFromDatabase()

◆ OSRGetDataAxisToSRSAxisMapping()

◆ OSRGetInvFlattening()

◆ OSRGetLinearUnits()

◆ OSRGetName()

◆ OSRGetNormProjParm()

◆ OSRGetPrimeMeridian()