4. What is QGIS?
4
▸ QGIS (until 2013 known as Quantum GIS) is a free and
open-source cross-platform desktop geographic
information system (GIS) application that supports
viewing, editing, and analysis of geospatial data.
6. Functionality
6
▸ QGIS functions as geographic
information system (GIS) software,
allowing users to analyze and edit spatial
information, in addition to composing
and exporting graphical maps.
▸ QGIS supports both raster and vector
layers; vector data is stored as either
point, line, or polygon features.
7. Functionality
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▸ Multiple formats of raster images are
supported, and the software can
georeference images.
▸ QGIS supports shapefiles, coverages,
personal geodatabases, dxf, MapInfo,
PostGIS, and other formats.
▸ Web services, including Web Map
Service and Web Feature Service, are
also supported to allow use of data from
external sources.
8. Functionality
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▸ Plugins written in Python or C++ extend
QGIS's capabilities.
▸ Plugins can geocode using the Google
Geocoding API, perform geoprocessing
functions similar to those of the
standard tools found in ArcGIS, and
interface with PostgreSQL/PostGIS,
SpatiaLite and MySQL databases.
10. Development
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▸ Written in C++, QGIS makes extensive
use of the Qt library.
▸ In addition to Qt, required dependencies
of QGIS include GEOS and SQLite.
▸ GDAL, GRASS GIS, PostGIS, and
PostgreSQL are also recommended, as
they provide access to additional data
formats.
11. Development
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▸ As of 2017, QGIS is available for multiple
operating systems including Mac OS X,
Linux, Unix, and Microsoft Windows.
▸ A mobile version of QGIS was under
development for Android as of 2014.
13. Development
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▸ 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.
17. Description
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▸ Tools to capture and zoom to
coordinates using decimal, DMS,
WKT, GeoJSON, MGRS, UTM,
Geohash, Maidenhead grid, and Plus
Codes formats.
▸ Provides external map support, point
digitizing tools, and coordinate
conversion tools.
18. Description
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▸ Lat Lon Tools makes it easy to
capture, zoom to coordinates, and
interact with other on-line mapping
tools. It adds MGRS, Standard UTM,
and Plus Codes support to QGIS.
▸ When working with Google Earth,
Google Maps or other on-line
mapping tools, coordinates are
specified in the order of 'Latitude,
Longitude'.
19. Description
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▸ By default Lat Lon Tools uses the
standard Google Map format, but is
very flexible and can use virtually any
projection and coordinate format for
input and output.
21. Description
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▸ Shape Tools is a collection of
geodesic shapes and tools. Create
ellipse, line of bearing, pie wedge,
donut, arc wedge, polygon, star,
ellipse rose, hypocyloid, polyfoil,
epicycloid, and heart shapes.
22. Description
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▸ Tools include "XY to Line" tool,
densify lines and polygons along
geodesic paths, geodesic line break,
geodesic measuring and create a
measurement layer, geodesic scale,
rotate, flip and translate tools, and
digitize points at an azimuth &
distance tools.
24. Description
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▸ Help to create mask, filter labels in it.
▸ This plugin allows user to quickly
transform a polygon selection into a
map masking layer or a region of
interest, following symbology choice.
▸ The plugin allows also to spatially
filter labeling of other layer, so that
labels will only appear in the Region
of Interest.