# GRASS Help System

## ANALYZING VECTOR DATA

Many GRASS programs operate on data stored in vector format. These vector programs perform data development, data import/export, and data conversion functions. However, most GRASS analysis programs operate on data stored in raster data format. Users must convert vector data to raster format to use these raster analysis programs. Refer to "Data Conversion" for more information on data conversion between GRASS raster, vector, and sites formats (located at the Help System Main Menu).

For those with Fortran compilers on their systems, GRASS includes a RIM database management query interface usable with GRASS vector map layers. A similar database management query exists for data in site_lists format. The RIM database management interface for use with vector map data is named v.db.rim.

Users can also query the content of displayed GRASS vector map layers using the program d.what.vect.

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Automatically created on: Thu Oct 14 02:12:26 2004