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99 lines
4.4 KiB
Markdown
99 lines
4.4 KiB
Markdown
# About QGIS
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[](https://github.com/qgis/QGIS/actions?query=workflow%3A%22QGIS+tests%22)
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[](https://hub.docker.com/r/qgis/qgis/tags)
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[](https://dev.azure.com/qgis/QGIS/_build/latest?definitionId=1&branchName=master)
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QGIS is an Open Source Geographic Information System. The project was born in
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May of 2002 and was established as a project on SourceForge in June of the same
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year. We've worked hard to make GIS software (which is traditionally expensive
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commercial software) a viable prospect for anyone with basic access to a
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Personal Computer. QGIS currently runs on most Unix platforms (macOS/OS X included)
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and Windows. QGIS is developed using the [Qt toolkit](https://qt.io) and C++. This
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means that QGIS feels snappy to use and has a pleasing, easy to use graphical
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user interface.
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QGIS aims to be an easy to use GIS, providing common functions and
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features. The initial goal was to provide a GIS data viewer. QGIS has
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reached that point in its evolution and is being used by many for their
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daily GIS data viewing and editing needs. QGIS supports a number of raster
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, vector and mesh data formats, with new support easily added using the plugin
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architecture.
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QGIS is released under the GNU Public License (GPL) Version 2 or above.
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Developing QGIS under this license means that you can (if you want to) inspect
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and modify the source code and guarantees that you, our happy user will always
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have access to a GIS program that is free of cost and can be freely
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modified.
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## Supported raster formats include:
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* GRASS
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* USGS DEM
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* ArcInfo binary grid
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* ArcInfo ASCII grid
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* ERDAS Imagine
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* SDTS
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* GeoTiff
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* Tiff with world file
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* WMS, WCS
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* PostgreSQL/PostGIS
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* GeoPackage
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## Supported vector formats include:
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* ESRI Shapefiles
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* PostgreSQL/PostGIS
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* GRASS
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* GeoPackage
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* SpatiaLite
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* [Other OGR supported formats](http://www.gdal.org/ogr_formats.html)
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* MSSQL
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* Oracle
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* WFS
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## Supported mesh formats include:
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* NetCDF
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* GRIB
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* 2DM
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* [Other MDAL supported formats](https://github.com/lutraconsulting/MDAL#supported-formats)
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## Note
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Please follow the installation instructions carefully.
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After extracting the distribution, please check the
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[documentation](https://qgis.org/en/docs/index.html)
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## Help us
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Please submit bug reports using the [QGIS bug tracker](https://github.com/qgis/QGIS/issues/).
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## Support
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You can get support in the following ways:
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- Using the QGIS community site at https://qgis.org
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- Joining the [qgis-users mailing list](https://lists.osgeo.org/mailman/listinfo/qgis-user)
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- Chatting with us real-time.
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Please wait around for a response to your question as many folks
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on the channel are doing other things and it may take a while for
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them to notice your question.
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The following paths all take you to the same chat room:
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- Using an IRC client and joining the [#qgis](http://webchat.freenode.net/?channels=#qgis) channel on irc.freenode.net.
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- Using a Matrix client and joining the [#qgis:matrix.org](http://matrix.to/#/#qgis:matrix.org) room.
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- Using [Gitter](https://gitter.im/qgis/QGIS?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge) chat.
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## Contribute
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QGIS is on GitHub at https://github.com/qgis/QGIS. If you wish to contribute
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patches you can [fork the project](https://help.github.com/forking/), make your changes, commit to your
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repository, and then [create a pull request](https://help.github.com/articles/creating-a-pull-request-from-a-fork/). The development team can then review your contribution and commit it upstream as appropriate.
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If you commit a new feature, add [FEATURE] to your commit message AND give a clear description of the new feature. A webhook will automatically create an issue on the QGIS-Documentation repo to tell people to write documentation about it.
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If you are not a developer, there are many other possibilities which do not require programming skills to help QGIS to evolve. Check our [project homepage for more information](http://qgis.org/en/site/getinvolved/index.html).
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### Building from source
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The [building guide](INSTALL.md) can be used to get started with building QGIS from source.
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