Quantum GIS, A Free Software For Your Geospatial Project (An Introduction)

When you need a software to analyse your geospatial data using GIS (Geographic Information System) but you don’t have enough budget to buy some licenses of GIS software, don’t give up. You still have a chance to accomplish your project. You could use Quantum GIS (QGIS), a powerful and user friendly Open Source Geographic Information System (GIS) licensed under the GNU General Public License. QGIS is an official project of the Open Source Geospatial Foundation (OSGeo). It runs on Linux, Unix, Mac OSX and Windows and supports numerous vector, raster, and database formats and functionality. What kind of capability provided by QGiS?

Quantum GIs provides a continuous growing number of capabilities provided by core functions and plugins. You can visualize, manage, edit, analyse data, and compose printable maps. Here are some features of QGIS Desktop:

QGIS Desktop

The major features include:

1. Direct viewing of vector and raster data in different formats and projections. Supported formats include:

  • PostGIS and SpatiaLite,
  • Most vector formats supported by the OGR library, including ESRI shapefiles, MapInfo, SDTS and GML.
  • Raster formats supported by the GDAL library*, such as digital elevation models, aerial photography or landsat imagery,
  • GRASS locations and mapsets,
  • Online spatial data served as OGC-compliant WMS , WMS-C (Tile cache), WFS and WFS-T

2. Mapping and interactive exploration of spatial data. Tools include:

  • on-the-fly reprojection
  • print composer
  • overview panel
  • spatial bookmarks
  • identify/select features
  • edit/view/search attributes
  • feature labeling
  • vector diagram overlay
  • advanced vector and raster symbology
  • graticule layer
  • map decorations like north arrow, scale bar and copyright label

3. Create, edit and export spatial data using:

  • digitizing tools for vector features
  • field and raster calculator
  • the georeferencer plugin
  • GPS tools to import and export GPX format, convert other GPS formats to GPX, or down/upload directly to a GPS unit

4. Perform spatial analysis, including:

  • map algebra
  • terrain analysis
  • hydrologic modeling
  • network analysis
  • and many others

5. Publish your map on the internet using QGIS Server or the “Export to Mapfile” capability (requires UMN MapServer)

6. Adapt QGIS to your needs through the extensible plugin architecture.

There are still a lot of another function of this software, you could go to to offcial website of Quantum GIS for detail. Thanks for visiting technotiptrick.com, have a nice day…