Fig. 4: Example of uncertainty quantification for spatial mapping provided within the project SoilGrids25.
From: Challenges in data-driven geospatial modeling for environmental research and practice
A Maps of one of the target variables—soil pH(water) in the topsoil layer. B Maps of associated uncertainty calculated as ratio between the inter-quantile range and the median for the same territory. The image was created using the open-source Geographic Information System QGIS. Basemap is visualized from tiles by CartoDB, distributed under CC BY 3.0, based on the data from OpenStreetMap, distributed under ODbL (https://cartodb.com/basemaps). Boundaries used are taken from geoBoundaries Global Database (www.geoboundaries.org), distributed under CC BY 4.0. SoilGrids data are publicly available under the CC-BY 4.0 (https://www.isric.org/explore/soilgrids).
