Geographic Information System
In which direction is Italy looking?
Tutorial to calculate the exposure of the Italian territory using DEM and QGIS. Analysis of slopes and cardinal directions to find out in which direction Italy "looks".
tutorials
Posts related to the tag tutorials
Geographic Information System
Fix invalid geometries
Learn how to fix geometry with Self-intersection errors in PostGIS using functions like ST_MakeValid, ST_IsValid, and more. A practical guide to ensuring correct topologies in your GIS data.
Geographic Information System
From Point to PointZ
Learn how to convert a 2D point vector to 3D using QGIS and GRASS GIS geoalgorithms. Step-by-step tutorial with practical examples and attached datasets.
Geographic Information System
Square circumscribed to the polygon
Find out how to create a square bounding box for polygons using PostGIS, with practical examples on the Municipalities of the Metropolitan City of Naples.
Cogito
Personal manifesto on Sharing Knowledge
Sharing knowledge is not a loss of competitive advantage, but an opportunity to grow and create value. A personal manifesto on the importance of Sharing Knowledge.
Geographic Information System
Remove duplicates from a vector
How to eliminate duplicates in a linear vector using SQL and the Topology Checker plugin in QGIS. A practical case with OSM and PostGIS hydrographic data.
Geographic Information System
Query: select part of a string excluding some characters
Learn how to select part of a string in QGIS using the substr operator, excluding certain characters, to filter data accurately and quickly.
Geographic Information System
Create a raster and a vector of the elevation bands
Learn to create a raster and elevation vector in QGIS using GRASS GIS. Step by step guide with a DEM, altimetric reclassification and conversion to polygons.
Geographic Information System
3D Open Source
Find out how to create a 3D reproduction of an area using only open source software like QGIS, without spending anything. Step by step guide using DEM, CTR and Qgis2threejs plugin.
Geographic Information System
Using Lidar files with QGis: article + tutorial
Learn how to use LiDAR files in QGIS, load .xyz data, and create 3D models, contour lines, and other raster processing. Practical exercise included!
Geographic Information System
How to turn a pdf into a raster
Guide on how to turn a PDF into a raster image using GIMP, with simple steps to get a good result without scanning.
Geographic Information System
How to import a DWG in QGIS
Learn how to import DWG files into QGIS by converting them to DXF using free tools like Draftsight. A simple guide to overcome format limitations and work efficiently in QGIS.
Geographic Information System
How to Import a Shapefile into Google Earth
Convert shapefiles to KML for viewing in Google Earth using QGIS. This guide simplifies the process, enabling seamless visualization of geospatial data in Google Earth.
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