SVG markers symbology (single, unique value, and graduated). Change vector symbology (single, graduated, unique value, and continuous). Support for raster formats supported by the GDAL library. GRASS integration, including view, edit, and analysis. Support for ESRI shapefiles and other vector formats support by the OGR library. 
Support for spatially enabled PostgreSQL tables using PostGIS. QGIS supports a number of raster and vector data formats, with new support easily added using the plugin architecture. QGIS has reached that point in its evolution and is being used by many for their daily GIS data viewing needs. The initial goal was to provide a GIS data viewer. 
QGIS aims to be an easy to use GIS, providing common functions and features. QGIS supports plugins to do things like display tracks from your GPS. QGIS supports many common spatial data formats (e.g.
QGIS supports vector, raster, and database formats and lets you browse and create map data on your computer. QGIS is a professional GIS application that is built on top of and proud to be itself Free and Open Source Software (FOSS).
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