## Topic: algebra

Note: see also the corresponding keyword algebra for additional references.

r.mapcalc | Raster map calculator.
r.mfilter | Performs raster map matrix filter.
r.mode | Finds the mode of values in a cover map within areas assigned the same category value in a user-specified base map.
r.neighbors | Makes each cell category value a function of the category values assigned to the cells around it, and stores new cell values in an output raster map layer.
r.quantile | Compute quantiles using two passes.
r.texture | Generate images with textural features from a raster map.
r3.mapcalc | Raster map calculator.
r3.neighbors | Makes each voxel value a function of the values assigned to the voxels around it, and stores new voxel values in an output 3D raster map
t.rast.mapcalc | Performs spatio-temporal mapcalc expressions on temporally sampled maps of space time raster datasets.
t.rast3d.mapcalc | Performs r3.mapcalc expressions on maps of sampled space time 3D raster datasets.
v.neighbors | Neighborhood analysis tool for vector point maps.

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© 2003-2015 GRASS Development Team, GRASS GIS 7.0.1 Reference Manual