Introduction to quantum gis
![introduction to quantum gis introduction to quantum gis](https://image.slidesharecdn.com/quantumgis-150616021335-lva1-app6892/95/quantum-gis-introduction-12-638.jpg)
Task manager is present which controls the running of the application which records the access to the background operation and provide reports for the same. User interface is maintained in QGIS by managing the threads of responsive users inside the application.Several plugins or widgets are available inside the application so that whenever developers need the database connection, they can use the same. Hence, when we connect to a database, authentication is required that helps to save the data for specific users and to establish connection in a safe manner. Different authentication methods are used in the application that helps to secure the data inside the application itself.Map layer settings are different that it is an instance of the map which will not be available for the second time unless stored in the file. But if some settings are needed globally for the application itself, maybe the location, then the settings need to be global.
![introduction to quantum gis introduction to quantum gis](https://cdn.shopify.com/s/files/1/1543/6487/products/9781784272135.IN05.jpg)
We have global, map layer, or project settings so that if a user needs to save some values specific to the project like background color or coordinate values, it can be saved and reused for the same project. Some variables should be given to the values stored so that it will be easy to retrieve the same when it is needed.
![introduction to quantum gis introduction to quantum gis](https://image.slidesharecdn.com/2015-02-09-150307135648-conversion-gate01/95/quantum-gis-16-638.jpg)
Server search and layers definition is available in both initial and 1.0 versions. The coordinate system is present in both versions but a dialogue box to change the coordinates is present near the coordinates itself in 1.0 version.
![introduction to quantum gis introduction to quantum gis](https://image.slidesharecdn.com/qgisworkshop-120915101711-phpapp02/95/tutorial-quantum-gis-17-1024.jpg)
Hence users can find global transparency in this version which is not found in initial version. In this version, global transparency was set which is hardcoded. In 2009, a new version 1.0 was released.We have different versions for the base applications where the server was connected and used directly. WMS server to relate to QGIS for the proper functioning of the application.
#Introduction to quantum gis install
Binary packages to install the application is present in the website that can be used for downloading and installing the same. Data can be exported from any external sources such as internet and can be referenced for graphical images in the application. These images can be georeferenced which helps in understanding the entire data. Also, vector images are supported from where we get the information of coordinates. A raster image is also supported in QGIS where we can draw the data by ourselves and export it into the application. Graphical maps can be composed or exported so that users can analyze geospatial data in different dimensions. This was published in the open space Geospatial foundation. Gary Sherman is the developer of Quantum GIS which was released in 2007.Hadoop, Data Science, Statistics & others