GIS coaching for territorial management.
Georeferencing in QGIS is an essential technique that allows you to align an image with real-world geographic coordinates using control points. Whether you’re working with a scanned map, a PDF plan, or an image without spatial…
Read More
Cloud Optimized GeoTIFF (COG) has become a key format for distributing geospatial rasters over the Internet. Unlike standard GeoTIFF, it allows GIS software such as QGIS to read only the necessary portions of a file stored…
Read More
When working with geographic data in QGIS, several file formats can be used to store vector layers. Two formats are particularly common: Shapefile and GeoPackage. Shapefile is a historical format that has been widely used since…
Read More
When working with geographic data in QGIS or in web mapping applications, two coordinate systems appear very frequently: EPSG:4326 and EPSG:3857. These two systems are used in many contexts, but they do not represent coordinates in…
Read More
Projections and coordinate reference systems (CRS) are essential concepts when working with geographic data in QGIS. Incorrect handling of projections can cause significant misalignment between layers. When working with geographic data in QGIS, projections and coordinate…
Read More
In QGIS, it is common to associate data from an external table with a geographic layer. For example, you may have a layer of municipalities and a CSV file containing demographic statistics. To combine this information,…
Read More