Contents. Functionality QGIS functions as (GIS) software, allowing users to analyze and edit spatial information, in addition to composing and exporting graphical maps. QGIS supports both and layers; vector data is stored as either point, line, or features. Multiple formats of raster images are supported, and the software can images. QGIS supports, personal geodatabases, and other formats. Web services, including and, are also supported to allow use of data from external sources.
QGIS integrates with other open-source GIS packages, including,. Written in or extend QGIS's capabilities. Plugins can geocode using the, perform geoprocessing functions similar to those of the standard tools found in, and interface with /, and databases. Development Gary Sherman began development of Quantum GIS in early 2002, and it became an incubator project of the in 2007. Version 1.0 was released in January 2009. Written in, QGIS makes extensive use of the library.
In addition to Qt, required dependencies of QGIS include GEOS and., and are also recommended, as they provide access to additional data formats. A screenshot from QGIS-Android in 2014. As of 2017, QGIS is available for multiple operating systems including,. A mobile version of QGIS was under development for as of 2014. For Mac users, the advantage of QGIS over is that it does not require the in order to run, and the interface is much cleaner and faster.
QGIS can also be used as a graphical user interface to GRASS. QGIS has a small install footprint on the host file system compared to commercial GISs and generally requires less and processing power; hence it can be used on older hardware or running simultaneously with other applications where CPU power may be limited. QGIS is maintained by volunteer developers who regularly release updates and bug fixes. As of 2012, developers have translated QGIS into 48 languages and the application is used internationally in academic and professional environments. Several companies offer support and feature development services. Function Layers We can add several data related to a particular region in QGIS.
The data are added in the form of layers in this software. Depending on their features of data, several layers are added.
Containing similar information. The layer files have the extension.shp. Preparing maps. Screenshot of Print Composer In order to prepare map with QGIS, Print composer is used. It can be used for adding map, labels, legends, etc.
Licensing As a application under, QGIS can be freely modified to perform different or more specialized tasks. Two examples are the QGIS Browser and QGIS Server applications, which use the same code for data access and rendering, but present different front-end interfaces. Adoption Many public and private organizations have adopted QGIS, including the Austrian state of, and the Swiss cantons of. Training Many QGIS training opportunities are available including dedicated YouTube Channels, online tutorials, and textbooks Releases. This section's use of may not follow Wikipedia's policies or guidelines.
Please by removing or external links, and converting useful links where appropriate into. (March 2017) Version Codename Release date Significant changes Old version, no longer supported: 0.0.1-alpha July 2002 Import and view data from Old version, no longer supported: 0.0.3-alpha 10 August 2002 Added support for and other vector formats. Old version, no longer supported: 0.0.4-alpha 15 August 2002 Improvements in layers handling, colorize layers, and view properties in a dialog box. Old version, no longer supported: 0.0.5-alpha 5 October 2002 Bug fixes and improved stability, ability to set line widths, and improved zoom in/out functionality.
Old version, no longer supported: 0.0.6 24 November 2002 Improvements to PostGIS connections, layer identify function added, and ability to view and sort attribute tables. Old version, no longer supported: 0.0.7 30 November 2002 Old version, no longer supported: 0.0.8 11 December 2002 Old version, no longer supported: 0.0.9 25 January 2003 Old version, no longer supported: 0.0.10 13 May 2003 Old version, no longer supported: 0.0.11 10 June 2003 Old version, no longer supported: 0.0.12 10 June 2003 Old version, no longer supported: 0.0.13 8 December 2003 Old version, no longer supported: 0.1pre1 14 February 2004 Added support for raster data; single, continuous, and graduated shading for vector data; ability to create buffers, implemented as a PostGIS plugin.
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From InaSAFE test repository During development of an InaSAFE version, developers make a test version of the software for people to trial. Here are the instructions on how to install this test version. Plugins ‣ Manage and install plugins. Click on Settings tab and Check Show also experimental plugins. Click on Settings tab and Add a new repository. Type the following into the Repository details Name: InaSAFE Test URL:.
OK. You should now have 2 repositories connected, Click on Plugins. Upgrade all.
Note.qgis(2) means that the directory is either called.qgis or.qgis2. Example: In Windows Operating System using QGIS 2.0 you would do following: Locate the directory C: Users.qgis2 python plugins. After extracting the plugin, it should be available as: C: Users.qgis2 python plugins inasafe. Mac and Linux users need to follow the same procedure but instead the plugin directory will be under the $HOME directory: /.qgis2/python/plugins/ Once the plugin is extracted, start QGIS and enable it from the plugin manager. To do this open the plugin manager Plugins ‣ Manage and install plugins.
And type insafe into the search box. You should see the InaSAFE plugin appear in the list. Now tick the checkbox next to it to enable the plugin. Downgrade the InaSAFE plugin to a selected version In case you have to use an older Version of QGIS or just want to install a specific version of the InaSAFE plugin into QGIS you have to do the following steps:.
Fetch the plugin manually from by clicking on your preferred version number then clicking download. Remove your local copy from /.qgis2/python/plugins/inasafe That would mean delete the folder inasafe which is inside your /.qgis2/python/plugins directory. For Windows user this inasafe directory would be in C: Users.qgis2 python plugins. Extract the downloaded version into that folder (Means to create the inasafe folder inside /.qgis2/python/plugins again. Restart QGIS.