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# Topic: aggregation

| Tool | Description |
|--------|-------------|
| [r.series](r.series.md) | Makes each output cell value a function of the values assigned to the corresponding cells in the input raster map layers. |
| [t.rast.aggregate.ds](t.rast.aggregate.ds.md) | Aggregates data of an existing space time raster dataset using the time intervals of a second space time dataset. |
| [t.rast.aggregate](t.rast.aggregate.md) | Aggregates temporally the maps of a space time raster dataset by a user defined granularity. |
| [t.rast.neighbors](t.rast.neighbors.md) | Performs a neighborhood analysis for each map in a space time raster dataset. |
| [t.rast.series](t.rast.series.md) | Performs different aggregation algorithms from r.series on all or a subset of raster maps in a space time raster dataset. |

*See also the corresponding keyword for additional references:*

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