QGIS is a GIS desktop software and a user-friendly desktop geographic information system; it provides data display, editing and analysis functions. QGIS is a cross-platform software that can run on Linux, Unix, Mac OSX and Windows platforms, and supports many vector, raster, and database formats and functions.
The operating environment of this tutorial: windows10 system, QGIS3.4.10, Dell G3 computer.
QGIS (formerly known as Quantum GIS) is a free software desktop GIS software licensed under the GNU General Public License; it provides data display, editing and analysis functions.
QGIS is a user-friendly desktop geographic information system. It is a cross-platform GIS desktop software that can run on Linux, Unix, Mac OSX and Windows platforms, and supports many vectors and rasters. , and database formats and functions. QGIS is a user-friendly, cross-platform, open source desktop geographic information system based on Qt and developed using C.
The biggest feature of QGIS is that the interface is very friendly. Anyone familiar with ArcGIS can quickly master the operation of QGIS. It supports WMS and seamlessly integrates PostGIS (object-relational database management system). It is almost completely copied. The analysis function of GRASS, so its analysis function is also very powerful. Compared with commercial GIS software, QGIS has smaller file size and requires less memory and processing power. Therefore, it can run on old hardware or in environments with limited CPU computing power. It is a lightweight desktop. GIS software.
The main features of QGIS software are:
1. Supports multiple GIS data file formats. Up to dozens of data formats can be supported through GDAL/OGR extension.
2. Support PostGIS database.
3. Supports obtaining data from WMS and WFS servers.
4. Integrates some functions of Grass.
5. Support basic operations on GIS data, such as editing and modifying attributes, etc.
6. Support creating maps.
7. Support function expansion through plug-ins
Currently, QGIS is continuously maintained by volunteer development groups, has been translated into 31 languages, and is widely used in academic and professional settings around the world. Environment.
QGIS interface introduction
After the QGIS software installation is completed, a "QGIS 3.4" appears on the desktop "There are multiple shortcuts in the folder. If you only use QGIS, double-click to open the third one.
After QGIS is opened, the default is the English menu, select Settings–Options in the menu bar, the first General item is selected by default, check Override system locale, and change the user interface file Select Simplified Chinese and restart the QGIS software.
Reopen the QGIS software and the following Chinese interface will appear.
The upper row of the interface is the menu bar and toolbar; the left panel is the data directory list, including local paths, database connections, and WMS and other network map data. The left panel Below is the layer list; above the right panel is the processing toolbox, below the right panel is the result viewer; in the middle of the interface is the map window; at the bottom of the interface is the status bar, including coordinate system, coordinate values, scale and other information.
"View"-"Toolbar" in the menu bar can control the display and hiding of multiple toolbars.
"View" - "Panel" in the menu bar can control the display and hiding of multiple functional panels in the left and right panels. Users can choose to display them themselves. and hidden function panels.
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