gdal_calc (1) Linux Manual Page
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