.TH "gdal_edit" 1 "Thu Oct 16 2014" "GDAL" \" -*- nroff -*- .ad l .nh .SH NAME gdal_edit \- gdal_edit\&.py Edit in place various information of an existing GDAL dataset .SH "SYNOPSIS" .PP .PP .nf gdal_edit [--help-general] [-a_srs srs_def] [-a_ullr ulx uly lrx lry] [-tr xres yres] [-unsetgt] [-a_nodata value] [-gcp pixel line easting northing [elevation]]* [-mo "META-TAG=VALUE"]* datasetname .fi .PP .SH "DESCRIPTION" .PP The gdal_edit\&.py script can be used to edit in place various information of an existing GDAL dataset (projection, geotransform, nodata, metadata)\&. .PP It works only with raster formats that support update access to existing datasets\&. .IP "\fB\fB--help-general\fP:\fP" 1c Gives a brief usage message for the generic GDAL commandline options and exit\&. .PP .IP "\fB\fB-a_srs\fP \fIsrs_def\fP:\fP" 1c .PP Defines the target coordinate system\&. This coordinate system will be written to the dataset\&. .PP .IP "\fB\fB-a_ullr\fP \fIulx uly lrx lry\fP:\fP" 1c Assign/override the georeferenced bounds of the dataset\&. .PP .IP "\fB\fB-tr\fP xres yres :\fP" 1c Set target resolution\&. The values must be expressed in georeferenced units\&. Both must be positive values\&. .PP .IP "\fB\fB-unsetgt\fP:\fP" 1c Remove the georeference information\&. .PP .IP "\fB\fB-a_nodata\fP \fIvalue\fP:\fP" 1c Assign a specified nodata value to output bands\&. Can be set to \fInone\fP to remove a nodata value if one exists for the dataset\&. .PP .IP "\fB\fB-gcp\fP \fIpixel line easting northing [elevation]\fP:\fP" 1c Add the indicated ground control point to the dataset\&. This option may be provided multiple times to provide a set of GCPs\&. .PP .IP "\fB\fB-mo\fP \fI'META-TAG=VALUE'\fP:\fP" 1c Passes a metadata key and value to set on the output dataset if possible\&. .PP .PP .PP -a_ullr, -tr and -unsetgt options are exclusive\&. .SH "EXAMPLE" .PP .PP .nf gdal_edit -mo DATUM=WGS84 -mo PROJ=GEODETIC -a_ullr 7 47 8 46 test.ecw .fi .PP .SH "AUTHORS" .PP Even Rouault =''>