11. GIS Book: Frequently asked questions
Which zone do I select if my study area shares two UTM zones? What you usually do in this case is work with the UTM zone that contains most of … Read more
coordinates
9. GIS Book: Spatial analyst
Spatial analysis is the process of modeling and obtaining results through computer processing and then examining and interpreting the results of the model. Spatial analysis is useful for assessing suitability … Read more
7.3. GIS Book: Calculation of XY coordinates
The Add XY Coordinates tool allows the values of the XY coordinates to be calculated (if the layers have the Z coordinate (height), it can also be calculated). To execute, … Read more
7.2. GIS Book: Calculation of area, perimeter and length
To calculate the area, perimeter or length of the different entities, it is necessary to take into account the geometry of each layer. First, ensure that the participant layer has … Read more
Basic operations with tables in QGIS 3
It is possible to perform operations in the attribute tables of QGIS 3, e.g. queries, calculation of geometric properties, concatenation and extraction of texts, mathematical and date operations. Operations in … Read more