3.2.68. Raster calculator (GRASS)

This tool performs calculations on single band rasters. The tool is based on r.mapcalc.

Input:

  • Single band GDAL supported raster, e.g. GeoTIFF. Add at least one raster file (to the “A” field). You can upload up to 8 raster files.

    • A – required field;

    • B – optional field;

    • C – optional field;

    • D – optional field;

    • E – optional field;

    • F – optional field;

    • G – optional field;

    • H – optional field;

  • Expression – required field. Use arithmetic (+, -, /, * etc.) or logical (>, == etc.) operators, or functions (log(x), if(x) `` etc.) to build an expression.  The whole list is available `here <https://grass.osgeo.org/grass83/manuals/r.mapcalc.html>`_.  Variables (rasters) should be specified as A, B, C etc. Example: ``(A+B)/C.

Output:

  • GeoTIFF file with the result of the calculation.

Launch the tool: https://toolbox.nextgis.com/t/r_mapcalc

Try it out using our sample:

Download input dataset to test the instrument. Step-by-step instructions included.

Get the output to additionally check the results.

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