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GDAL_EDIT(1) GDAL GDAL_EDIT(1) NAME gdal_edit - Edit in place various information of an existing GDAL dataset. SYNOPSIS gdal_edit [--help] [--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] [-a_coord_epoch <epoch>] [-unsetepoch] [-unsetstats] [-stats] [-approx_stats] [-setstats <min> <max> <mean> <stddev>] [-scale <value>] [-offset <value>] [-units <value>] [-colorinterp_<X> {red|green|blue|alpha|gray|undefined|pan|coastal|rededge|nir|swir|mwir|lwir|...}]... [-gcp <pixel> <line> <easting> <northing> [<elevation>]]... [-unsetmd] [-oo <NAME>=<VALUE>]... [-mo <META-TAG>=<VALUE>]... <datasetname> DESCRIPTION gdal_edit can be used to edit in place various information of an exist- ing GDAL dataset (projection, geotransform, nodata, metadata). It works only with raster formats that support update access to exist- ing 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 GTiff -- GeoTIFF File Format format (this is not a exhaustive list). NOTE: gdal_edit is a Python utility, and is only available if GDAL Python bindings are available. --help Show this help message and exit --help-general Gives a brief usage message for the generic GDAL commandline op- tions and exit. -ro Open the dataset in read-only. Might be useful for drivers re- fusing 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_coord_epoch <epoch> Assign/override the coordinate epoch of the dataset, as a deci- mal year (e.g., 2021.3). New in version 3.9. -unsetepoch Remove the coordinate epoch of the dataset. New in version 3.9. -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 georefer- enced 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. Alterna- tively 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. Alterna- tively 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|pan|coastal|red- edge|nir|swir|mwir|lwir|...} 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 op- tion 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 exclu- sive. 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 1998-2025 Feb 11, 2025 GDAL_EDIT(1)
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