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# Topic: terrain

| Tool | Description |
|--------|-------------|
| [i.topo.corr](i.topo.corr.md) | Computes topographic correction of reflectance. |
| [r.slope.aspect](r.slope.aspect.md) | Generates raster maps of slope, aspect, curvatures and partial derivatives from an elevation raster map. Aspect is calculated counterclockwise from east. |

*See also the corresponding keyword for additional references:*

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