1GDAL_EDIT(1) GDAL GDAL_EDIT(1)
2
6 gdal_edit - Edit in place various information of an existing GDAL
7 dataset.
8
10 gdal_edit [--help-general] [-ro] [-a_srs srs_def]
11 [-a_ullr ulx uly lrx lry] [-a_ulurll ulx uly urx ury llx lly]
12 [-tr xres yres] [-unsetgt] [-unsetrpc] [-a_nodata value] [-unsetnodata]
13 [-unsetstats] [-stats] [-approx_stats]
14 [-setstats min max mean stddev]
15 [-scale value] [-offset value] [-units value]
16 [-colorinterp_X red|green|blue|alpha|gray|undefined]*
17 [-gcp pixel line easting northing [elevation]]*
18 [-unsetmd] [-oo NAME=VALUE]* [-mo "META-TAG=VALUE"]* datasetname
19
21 The gdal_edit.py script can be used to edit in place various informa‐
22 tion of an existing GDAL dataset (projection, geotransform, nodata,
23 metadata).
24 It works only with raster formats that support update access to exist‐
26 ing datasets.
27 CAUTION:
29 Depending on the format, older values of the updated information
30 might still be found in the file in a "ghost" state, even if no
31 longer accessible through the GDAL API. This is for example the case
32 of the GTiff -- GeoTIFF File Format format (this is not a exhaustive
33 list).
34 --help-general
36 Gives a brief usage message for the generic GDAL commandline op‐
37 tions and exit.
38 -ro Open the dataset in read-only. Might be useful for drivers re‐
40 fusing to use the dataset in update-mode. In which case, updated
41 information will go into PAM .aux.xml files.
42 -a_srs <srs_def>
44 Defines the target coordinate system. This coordinate system
45 will be written to the dataset. If the empty string or None is
46 specified, then the existing coordinate system will be removed
47 (for TIFF/GeoTIFF, might not be well supported besides that).
48 -a_ullr ulx uly lrx lry:
50 Assign/override the georeferenced bounds of the dataset.
51 -a_ulurll ulx uly urx ury llx lly:
53 Assign/override the georeferenced bounds of the dataset from
54 three points: upper-left, upper-right and lower-left. Unlike
55 -a_ullr, this also supports rotated datasets (edges not parallel
56 to coordinate system axes).
57 New in version 3.1.
59 -tr <xres> <yres>
62 Set target resolution. The values must be expressed in georefer‐
63 enced units. Both must be positive values.
64 -unsetgt
66 Remove the georeference information.
67 -unsetrpc
69 Remove RPC information.
70 New in version 2.4.
72 -unsetstats
75 Remove band statistics information.
76 New in version 2.0.
78 -stats Calculate and store band statistics.
81 New in version 2.0.
83 -setstats min max mean stddev
86 Store user-defined values for band statistics (minimum, maximum,
87 mean and standard deviation). If any of the values is set to
88 None, the real statistics are calclulated from the file and the
89 ones set to None are used from the real statistics.
90 New in version 2.4.
92 -approx_stats
95 Calculate and store approximate band statistics.
96 New in version 2.0.
98 -a_nodata <value>
101 Assign a specified nodata value to output bands.
102 -unsetnodata
104 Remove existing nodata values.
105 New in version 2.1.
107 -scale <value>
110 Assign a specified scale value to output bands. If a single
111 scale value is provided it will be set for all bands. Alterna‐
112 tively one scale value per band can be provided, in which case
113 the number of scale values must match the number of bands. If
114 no scale is needed, it it recommended to set the value to 1.
115 Scale and Offset are generally used together. For example, scale
116 and offset might be used to store elevations in a unsigned 16bit
117 integer file with a precision of 0.1, and starting from -100.
118 True values would be calculated as: true_value = (pixel_value *
119 scale) + offset
120 NOTE:
122 These values can be applied using -unscale during a
123 gdal_translate run.
124 New in version 2.2.
126 -offset <value>
129 Assign a specified offset value to output bands. If a single
130 offset value is provided it will be set for all bands. Alterna‐
131 tively one offset value per band can be provided, in which case
132 the number of offset values must match the number of bands. If
133 no offset is needed, it recommended to set the value to 0. For
134 more see scale.
135 New in version 2.2.
137 -units <value>
140 Assign a unit to output band(s).
141 New in version 3.1.
143 -colorinterp_X red|green|blue|alpha|gray|undefined
146 Change the color interpretation of band X (where X is a valid
147 band number, starting at 1).
148 New in version 2.3.
150 -gcp pixel line easting northing [elevation]
153 Add the indicated ground control point to the dataset. This op‐
154 tion may be provided multiple times to provide a set of GCPs.
155 -unsetmd
157 Remove existing metadata (in the default metadata domain). Can
158 be combined with -mo.
159 New in version 2.0.
161 -mo META-TAG=VALUE
164 Passes a metadata key and value to set on the output dataset if
165 possible. This metadata is added to the existing metadata
166 items, unless -unsetmd is also specified.
167 -oo NAME=VALUE
169 Open option (format specific).
170 New in version 2.0.
172 The -a_ullr, -a_ulurll, -tr and -unsetgt options are exclusive.
175 The -unsetstats and either -stats or -approx_stats options are exclu‐
177 sive.
178
180 gdal_edit -mo DATUM=WGS84 -mo PROJ=GEODETIC -a_ullr 7 47 8 46 test.ecw
181 gdal_edit -scale 1e3 1e4 -offset 0 10 twoBand.tif
183
185 Even Rouault <even.rouault@spatialys.com>
186
188 1998-2023
189 Oct 30, 2023 GDAL_EDIT(1)