## Topic: algebra

r.mapcalc | Raster map calculator.
r.mapcalc.simple | Calculates a new raster map from a simple r.mapcalc expression.
r.mfilter | Performs raster map matrix filter.
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.algebra | Apply temporal and spatial operations on space time raster datasets using temporal raster algebra.
t.rast.mapcalc | Performs spatio-temporal mapcalc expressions on temporally sampled maps of space time raster datasets.
t.rast3d.algebra | Apply temporal and spatial operations on space time 3D raster datasets using temporal 3D raster algebra.
t.rast3d.mapcalc | Performs r3.mapcalc expressions on maps of sampled space time 3D raster datasets.
t.vect.algebra | Apply temporal and spatial operations on space time vector datasets using temporal vector algebra.
v.neighbors | Neighborhood analysis tool for vector point maps.

See also the corresponding keyword algebra for additional references.

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