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QGIS

Quantum GIS

Quantum GIS (QGIS) is a user friendly Open Source Geographic Information System (GIS). QGIS supports vector, raster, and database formats.

A Geographical Information System (GIS) is a collection of software that allows you to create, visualise, query and analyse geospatial data. Geospatial data refers to information about the geographic location of an entity. This often involves the use of a geographic coordinate, like a latitude or longitude value. Spatial data is another commonly used term, as are: geographic data, GIS data, map data, location data, coordinate data and spatial geometry data.

QGIS aims to be an easy to use GIS, providing common functions and features. The initial goal was to provide a GIS data viewer. 

QGIS has reached that point in its evolution and is being used by many for their daily GIS data viewing needs.

 QGIS 2.2

Price
Free to download

Size
78.4MB
License

GNU GPL v2

Developer
QGIS Development Team

Website
www.qgis.org

System Requirements
Qt 4.2.2

Optional:
Expat XML Parser
GNU Scientific Library

Support:
QGIS Documentation, Manuals, Wiki, Mailing Lists, Forums

Selected Reviews:
Cartographic.com

Features include:

  • View and overlay vector and raster data in different formats and projections without conversion to an internal or common format. Supported formats include:
    • spatially-enabled PostgreSQL tables using PostGIS,
    • most vector formats supported by the OGR library, including ESRI shapefiles, MapInfo, SDTS and GML
    • all raster formats supported by the GDAL library, such as digital elevation models, aerial photography or landsat imagery,
    • GRASS mapsets,
    • online spatial data served as OGC-compliant WMS or WFS;
  • Create maps and interactively explore spatial data with a friendly graphical user interface. The many helpful tools available in the GUI include:
    • on the fly projection
    • map composer
    • overview panel
    • spatial bookmarks
    • identify/select features
    • edit/view/search attributes
    • feature labeling
    • change vector and raster symbology
    • add a graticule layer
    • decorate your map with a north arrow, scale bar and copyright label
    • save and restore projects
  • Create, edit and export spatial data using:
    • digitizing tools for GRASS and shapefile formats
    • 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
  • Perform spatial analysis using the buffer tool (PostGIS only) or the integrated GRASS tools, including:
    • map algebra
    • terrain analysis
    • hydrologic modeling
    • network analysis,
    • and many others
  • Publish your map on the internet using the export to Mapfile capability (requires a webserver with UMN MapServer installed)
  • Adapt Quantum GIS to your special needs through the extensible plugin architecture

  • Plugins
    • Add WFS Layer
    • Add Delimited Text Layer
    • Decorations (Copyright Label, North Arrow and Scale bar)
    • Georeferencer
    • GPS Tools
    • GRASS
    • Graticule Creator
    • PostgreSQL Geoprocessing functions
    • SPIT Shapefile to PostgreSQL/PostGIS Import Tool
    • Python Console

Return to Scientific Home Page | Return to Earth Science Home Page

QGIS also features in our 'Linux Equivalents to Windows Software' section. The category selector below allows you to filter the different types of software included in that separate article.

Category:

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Last Updated Tuesday, May 27 2014 @ 04:20 PM EDT


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