gdal_calc (1) - Linux Manuals

gdal_calc: gdal_calc.py

Command to display gdal_calc manual in Linux: $ man 1 gdal_calc

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>=''>