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# Topic: cost surface

| Tool | Description |
|--------|-------------|
| [r.cost](r.cost.md) | 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](r.walk.md) | 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 for additional references:*

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