gdal_calc (1) Linux Manual Page
NAME
gdal_calc – gdal_calc.py Command line raster calculator with numpy syntax
SYNOPSIS
gdal_calc.py[-A<filename>][--A_band][-B... - Z filename][other_options] Options : -h, --help show this help message and exit-- calc = CALC calculation in gdalnumeric syntax using + -/* or any
numpy array functions (i.e. logical_and())
-A A input gdal raster file, note you can use any letter
A-Z
--A_band=A_BAND number of raster band for file A (default 0)
--outfile=OUTF output file to generate or fill
--NoDataValue=NODATAVALUE
set output nodata value (Defaults to datatype specific
value)
--type=TYPE output datatype, must be one of ['Int32', 'Int16',
'Float64', 'UInt16', 'Byte', 'UInt32', 'Float32']
--format=FORMAT GDAL format for output file (default 'GTiff')
--creation-option=CREATION_OPTIONS, --co=CREATION_OPTIONS
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=ALLBANDS process all bands of given raster (A-Z)
--overwrite overwrite output file if it already exists
--debug print debugging information
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>=”>