# Azimuthal Equidistant

Name | Azimuthal Equidistant EPSG Code |
GeoTIFF Code | CT_AzimuthalEquidistant (12)
OGC WKT Name | Azimuthal_Equidistant
Supported By | GeoTIFF, PROJ.4, OGC WKT

### Projection Parameters

Name | EPSG # | GeoTIFF ID | OGC WKT | Units | Notes Latitude of projection center | 1 | ProjCenterLat | latitude_of_center | Angular |
Longitude of projection center | 2 | ProjCenterLong | longitude_of_center | Angular |
False Easting | 6 | FalseEasting | false_easting | Linear |
False Northing | 7 | FalseNorthing | false_northing | Linear |

### Notes

Intergraph uses NatOriginLat and NatOriginLong instead of ProjCenterLat/Long but I have organized to match discussions on geotiff-l, and PCI/Erdas practise.

I also can't get projection results to match between PROJ.4 and PCI (GCTP) as mentioned in Random Issues.

### PROJ.4 Organization

      +proj=aeqd  +lat_0=Latitude at projection center
                  +lon_0=Longitude at projection center
                  +x_0=False Easting
                  +y_0=False Northing