# GRASS Help System

## 2-D AND 3-D MANIPULATIONS

GRASS programs can be used to perform two- and three-dimensional data manipulations on raster data. These functions are useful for modeling iterative interactions across a landscape.

- r.basins.fill - r.drain
- r.surf.contour - r.watershed
- r.surf.idw - r.surf.idw2

For more information on a specific command, select a command and press ESC.

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Automatically created on: Fri Oct 20 10:10:00 2006