DTED -- Military Elevation Data
Driver short name
Driver built-in by default
This driver is built-in by default
GDAL supports DTED Levels 0, 1, and 2 elevation data for read access. Elevation data is returned as 16 bit signed integer. Appropriate projection and georeferencing information is also returned. A variety of header fields are returned dataset level metadata.
This driver supports the
This driver supports georeferencing
This driver supports virtual I/O operations (/vsimem/, etc.)
This paragraph lists the configuration options that can be set to alter the default behavior of the DTED driver.
GDAL_DTED_SINGLE_BLOCK=[TRUE/FALSE]: Defaults to
FALSE. Determines whether to read the entire file as a single block. See Read speed.
REPORT_COMPD_CS=[TRUE/FALSE]: Defaults to
FALSE. Can be set to TRUE to avoid stripping the vertical CS of compound CS when reading the SRS of a file.
DTED_VERIFY_CHECKSUM=[YES/NO]: Defaults to
NO. Determine whether to issue an error/warning if the checksum written do the DTED file does not match its contents. See Checksum Issues.
DTED_APPLY_PIXEL_IS_POINT=[TRUE/FALSE]: (GDAL >= 3.1) Defaults to
TRUE, apply a pixel-is-point interpretation to the data when reading the geotransform.
Elevation data in DTED files are organized per columns. This data
organization doesn't fit very well with some scanline oriented
algorithms and can cause slowdowns, especially for DTED Level 2
datasets. By defining
GDAL_DTED_SINGLE_BLOCK=TRUE, a whole DTED dataset
will be considered as a single block. The first access to the file will
be slow, but further accesses will be much quicker. Only use that option
if you need to do processing on a whole file.
If the horizontal datum specified in the DTED file is WGS84, the DTED driver will report WGS 84 as SRS.
If the horizontal datum specified in the DTED file is WGS72, the DTED driver will report WGS 72 as SRS and issue a warning.
If the horizontal datum specified in the DTED file is neither WGS84 nor WGS72, the DTED driver will report WGS 84 as SRS and issue a warning.
The default behavior of the DTED driver is to ignore the checksum while
reading data from the files. However, you may specify the environment
DTED_VERIFY_CHECKSUM=YES if you want the checksums to be
verified. In some cases, the checksum written in the DTED file is wrong
(the data producer did a wrong job). This will be reported as a warning.
If the checksum written in the DTED file and the checksum computed from
the data do not match, an error will be issued.
The DTED driver does support creating new files, but the input data must be exactly formatted as a Level 0, 1 or 2 cell. That is the size, and bounds must be appropriate for a cell.
Implemented as dteddataset.cpp.