3.2. Key QGIS functionalities for SDG indicators computation

QGIS provides thousands of functionalities and plugins to manipulate and analyze geospatial data. For the computation of SDG indicators using global geospatial datasets, a few key functionalities are needed. A selection of the most relevant ones is reported in Table 3.2.1. The full set of QGIS functionalities can be found in the official QGIS User Guide.

Table 3.2.1 Selection of QGIS functionalities for SDG indicators computation

Function	Description	Link
Vector and raster data import, coordinate reference system management and layer symbology	Basic QGIS operations for data I/O and map visualization	https://docs.qgis.org/3.22/en/docs/user_manual/introduction/getting_started.html#sample-session-loading-raster-and-vector-layers
Vector feature selections	Selection/extraction of data subsets from vector layers based on user-selected rules	https://docs.qgis.org/3.22/en/docs/user_manual/introduction/general_tools.html#interacting-with-features
Vector attribute table manipulation	Editing tools for vector layers attribute table	https://docs.qgis.org/3.22/en/docs/user_manual/working_with_vector/attribute_table.html
Vector geoprocessing	Geometry processing functionalities for vector layers	https://docs.qgis.org/3.22/en/docs/user_manual/processing_algs/gdal/vectorgeoprocessing.html#vector-geoprocessing
Raster layer clip	Subsetting functionalities for raster datasets	https://docs.qgis.org/3.22/en/docs/training_manual/processing/cutting_merging.html?highlight=raster#clipping-and-merging-raster-layers
Raster calculator	Computational tool for raster pixel values	https://docs.qgis.org/3.22/en/docs/user_manual/working_with_raster/raster_analysis.html#raster-calculator
Raster layer statistics	Basic statistics extraction from raster pixel values	https://docs.qgis.org/3.22/en/docs/user_manual/processing_algs/qgis/rasteranalysis.html?highlight=raster%20stat#raster-layer-statistics
Zonal statistics	Raster statistics spatially constrained to overlapping vector layers	https://docs.qgis.org/3.22/en/docs/user_manual/processing_algs/qgis/rasteranalysis.html?highlight=raster%20stat#zonal-statistics