Provided by: gdal-bin_3.4.1+dfsg-1build4_amd64 
NAME
gdal_edit - Edit in place various information of an existing GDAL dataset.
SYNOPSIS
gdal_edit [--help-general] [-ro] [-a_srs srs_def]
[-a_ullr ulx uly lrx lry] [-a_ulurll ulx uly urx ury llx lly]
[-tr xres yres] [-unsetgt] [-unsetrpc] [-a_nodata value] [-unsetnodata]
[-unsetstats] [-stats] [-approx_stats]
[-setstats min max mean stddev]
[-scale value] [-offset value] [-units value]
[-colorinterp_X red|green|blue|alpha|gray|undefined]*
[-gcp pixel line easting northing [elevation]]*
[-unsetmd] [-oo NAME=VALUE]* [-mo "META-TAG=VALUE"]* datasetname
DESCRIPTION
The gdal_edit.py script can be used to edit in place various information of an existing
GDAL dataset (projection, geotransform, nodata, metadata).
It works only with raster formats that support update access to existing datasets.
CAUTION:
Depending on the format, older values of the updated information might still be found
in the file in a "ghost" state, even if no longer accessible through the GDAL API. This
is for example the case of the raster.gtiff format (this is not a exhaustive list).
--help-general
Gives a brief usage message for the generic GDAL commandline options and exit.
-ro Open the dataset in read-only. Might be useful for drivers refusing to use the
dataset in update-mode. In which case, updated information will go into PAM
.aux.xml files.
-a_srs <srs_def>
Defines the target coordinate system. This coordinate system will be written to
the dataset. If the empty string or None is specified, then the existing
coordinate system will be removed (for TIFF/GeoTIFF, might not be well supported
besides that).
-a_ullr ulx uly lrx lry:
Assign/override the georeferenced bounds of the dataset.
-a_ulurll ulx uly urx ury llx lly:
Assign/override the georeferenced bounds of the dataset from three points:
upper-left, upper-right and lower-left. Unlike -a_ullr, this also supports rotated
datasets (edges not parallel to coordinate system axes).
New in version 3.1.
-tr <xres> <yres>
Set target resolution. The values must be expressed in georeferenced units. Both
must be positive values.
-unsetgt
Remove the georeference information.
-unsetrpc
Remove RPC information.
New in version 2.4.
-unsetstats
Remove band statistics information.
New in version 2.0.
-stats Calculate and store band statistics.
New in version 2.0.
-setstats min max mean stddev
Store user-defined values for band statistics (minimum, maximum, mean and standard
deviation). If any of the values is set to None, the real statistics are
calclulated from the file and the ones set to None are used from the real
statistics.
New in version 2.4.
-approx_stats
Calculate and store approximate band statistics.
New in version 2.0.
-a_nodata <value>
Assign a specified nodata value to output bands.
-unsetnodata
Remove existing nodata values.
New in version 2.1.
-scale <value>
Assign a specified scale value to output bands. If a single scale value is
provided it will be set for all bands. Alternatively one scale value per band can
be provided, in which case the number of scale values must match the number of
bands. If no scale is needed, it it recommended to set the value to 1. Scale and
Offset are generally used together. For example, scale and offset might be used to
store elevations in a unsigned 16bit integer file with a precision of 0.1, and
starting from -100. True values would be calculated as: true_value = (pixel_value *
scale) + offset
NOTE:
These values can be applied using -unscale during a gdal_translate run.
New in version 2.2.
-offset <value>
Assign a specified offset value to output bands. If a single offset value is
provided it will be set for all bands. Alternatively one offset value per band can
be provided, in which case the number of offset values must match the number of
bands. If no offset is needed, it recommended to set the value to 0. For more see
scale.
New in version 2.2.
-units <value>
Assign a unit to output band(s).
New in version 3.1.
-colorinterp_X red|green|blue|alpha|gray|undefined
Change the color interpretation of band X (where X is a valid band number, starting
at 1).
New in version 2.3.
-gcp pixel line easting northing [elevation]
Add the indicated ground control point to the dataset. This option may be provided
multiple times to provide a set of GCPs.
-unsetmd
Remove existing metadata (in the default metadata domain). Can be combined with
-mo.
New in version 2.0.
-mo META-TAG=VALUE
Passes a metadata key and value to set on the output dataset if possible. This
metadata is added to the existing metadata items, unless -unsetmd is also
specified.
-oo NAME=VALUE
Open option (format specific).
New in version 2.0.
The -a_ullr, -a_ulurll, -tr and -unsetgt options are exclusive.
The -unsetstats and either -stats or -approx_stats options are exclusive.
EXAMPLE
gdal_edit -mo DATUM=WGS84 -mo PROJ=GEODETIC -a_ullr 7 47 8 46 test.ecw
gdal_edit -scale 1e3 1e4 -offset 0 10 twoBand.tif
AUTHOR
Even Rouault <even.rouault@spatialys.com>
COPYRIGHT
1998-2021
Dec 27, 2021 GDAL_EDIT(1)