# GRASS Help System

## GRASS TO/FROM OTHER FILE FORMAT CONVERSIONS

Increasingly, digital spatial data is becoming available in a wide variety of data formats. It is generally much more efficient to convert existing digital data to the format needed by your system, than to re-digitize such data.

The commands listed below are useful in the import/export process. These commands convert GRASS files to and from such other file formats as ARC-INFO, USGS DLG-3 Optional, DXF, MOSS, U.S. Census Bureau TIGER, and SUN raster format.

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

Importing other data Exporting GRASS data
to GRASS vector format: to other systems' formats:

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- v.in.arc - v.out.arc
- v.in.dlg - v.out.dlg
- v.in.dxf - v.out.dxf
- v.in.tiger - v.out.moss
- r.in.sunrast
- m.lulc.USGS
- Gen.Maps
- Gen.tractmap

Command name extensions take the form ".in.format" and "out.format", where: ".in." designates that data is being imported to GRASS from another format; ".out." designates that data is being exported from GRASS to another format; and "format" designates the other (non-GRASS) data format conversion type.

The "v." prefix indicates that programs are relevant to GRASS vector data. The "r." prefix indicates that programs are relevant to GRASS raster data. The "m." prefix indicates that programs perform general data import and processing functions.

If the user wishes to export data in GRASS raster or site_lists data formats to another system's format, these files must be converted to GRASS vector format before export.

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Automatically created on: Mon Apr 4 09:21:46 2005