topic_cost_surface (1)
Topic: cost surface
r.cost Creates a raster map showing the cumulative cost of moving
between different geographic locations on an input raster
map whose cell category values represent cost.
r.walk Creates a raster map showing the anisotropic cumulative cost
of moving between different geographic locations on an input
raster map whose cell category values represent cost.
See also the corresponding keyword cost surface for additional references.
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2003-2017 GRASS Development Team, GRASS GIS 7.2.1 Reference Manual