Topic: surface

r.contour		Produces a vector map of specified contours from a raster map.
r.fill.stats		Rapidly fills ’no data’ cells (NULLs) of a raster map with interpolated values (IDW).
r.fillnulls		Fills no-data areas in raster maps using spline interpolation.
r.random.surface		Generates random surface(s) with spatial dependence.
r.resamp.bspline		Performs bilinear or bicubic spline interpolation with Tykhonov regularization.
r.surf.area		Prints estimation of surface area for raster map.
r.surf.contour		Generates surface raster map from rasterized contours.
r.surf.fractal		Creates a fractal surface of a given fractal dimension.
r.surf.gauss		Generates a raster map using gaussian random number generator.
r.surf.idw		Provides surface interpolation from raster point data by Inverse Distance Squared Weighting.
r.surf.random		Produces a raster surface map of uniform random deviates with defined range.
v.surf.bspline		Performs bicubic or bilinear spline interpolation with Tykhonov regularization.
v.surf.idw		Provides surface interpolation from vector point data by Inverse Distance Squared Weighting.
v.surf.rst		Performs surface interpolation from vector points map by splines.

See also the corresponding keyword surface for additional references.

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