Man pages sections > man1 > gdal_calc

gdal_calc - Command line raster calculator with numpy syntax.

gdal_calc(1) General Commands Manual gdal_calc(1)

NAME

gdal_calc - Command line raster calculator with numpy syntax.

SYNOPSIS

gdal_calc.py --calc=expression --outfile=out_filename [-A filename]
             [--A_band=n] [-B...-Z filename] [other_options]
Options: -h, --help show this help message and exit --calc=expression calculation in gdalnumeric syntax using +-/* or any numpy array functions (i.e. log10()) -A filename input gdal raster file, you can use any letter (A-Z) --A_band=n number of raster band for file A (default 1) --outfile=filename output file to generate or fill --NoDataValue=value output nodata value (default datatype specific value) --type=datatype output datatype, must be one of ['Int32', 'Int16', 'Float64', 'UInt16', 'Byte', 'UInt32', 'Float32'] --format=gdal_format GDAL format for output file (default 'GTiff') --creation-option=option, --co=option Passes a creation option to the output format driver. Multiple options may be listed. See format specific documentation for legal creation options for each format. --allBands=[A-Z] process all bands of given raster (A-Z) --overwrite overwrite output file if it already exists --debug print debugging information --quiet suppress progress messages

DESCRIPTION

Command line raster calculator with numpy syntax. Use any basic arithmetic supported by numpy arrays such as +-*\ along with logical operators such as >. Note that all files must have the same dimensions, but no projection checking is performed.

EXAMPLE

add two files together
gdal_calc.py -A input1.tif -B input2.tif --outfile=result.tif --calc="A+B"
average of two layers
gdal_calc.py -A input.tif -B input2.tif --outfile=result.tif --calc="(A+B)/2"
set values of zero and below to null
gdal_calc.py -A input.tif --outfile=result.tif --calc="A*(A>0)" --NoDataValue=0

AUTHORS

Chris Yesson <chris dot yesson at ioz dot ac dot uk> Etienne Tourigny <etourigny dot dev at gmail dot com>
Sun Oct 29 2017 GDAL