# GRASS Help System

r.drain -

r.drain traces a flow through a least-cost path in an elevation model. the elevation surface (a raster map layer) might by the cumulative cost map generated by the r.cost program. The output result (also a raster map layer) will show one or more least-cost paths between each user-provided location(s) and the low spot (low category values) in the input model.

Manual entry for r.drain

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Automatically created on: Wed Oct 12 14:08:43 2005