# GRASS Help System

## EDITING AND PATCHING MAP DATA

Frequently, (due to the size of digitizing tablets) users digitize data in relatively small chunks which must be "patched" together before data are analyzed. The GRASS commands listed below can be used to edit and patch digital data. Prefixes denote whether commands operate on data in vector ("v.") or raster ("r.") file format.

- v.patch - r.patch
- v.prune - r.mapcalc
- v.spag

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

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Automatically created on: Sat Jan 8 06:50:26 2005