r3.gradient(1grass) | Grass User's Manual | r3.gradient(1grass) |
r3.gradient - Computes gradient of a 3D raster map and outputs gradient components as three 3D raster maps.
raster3d, gradient, voxel
r3.gradient
r3.gradient --help
r3.gradient input=name
output=grad_x,grad_y,grad_z[,grad_x,grad_y,grad_z,...]
[blocksize=size_x,size_y,size_z[,size_x,size_y,size_z,...]]
[--overwrite] [--help] [--verbose] [--quiet]
[--ui]
Module r3.gradient computes gradient from a 3D raster map. Results are three 3D raster maps describing the x, y, z components of the computed gradient field.
# create a 3D raster g.region s=0 n=100 w=0 e=100 b=0 t=100 -p r3.mapcalc "test_gradient = sqrt(row()*row() +col()*col()+ depth()*depth())" # compute gradient r3.gradient input=test_gradient output=grad_x,grad_y,grad_z
r3.flow, r.flow
Anna Petrasova, NCSU OSGeoREL, developed during GSoC 2014.
Last changed: $Date: 2014-11-27 00:20:52 +0100 (Thu, 27 Nov 2014) $
Available at: r3.gradient source code (history)
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