The data source file is a 10-layered GeoTIFF file, derived from the raster data source GRTSmaster_habitats (link). Both GeoTIFFs (GRTSmaster_habitats, GRTSmh_brick) use the INT4S datatype. The GRTSmh_brick data source (resolution 32 m) holds the decimal integer ranking numbers of 10 hierarchical levels of the GRTS cell addresses, including the one from GRTSmaster_habitats (with GRTS cell addresses at the resolution level). See R-code in the GitHub repository 'n2khab-preprocessing' at commit ecadaf5 for its creation from the GRTSmaster_habitats data source. A reading function to return the data source in a standardized way into the R environment is provided by the R-package n2khab. The higher-level ranking numbers of the RasterBrick allow spatially balanced samples at lower spatial resolution than that of 32 m, and can also be used for aggregation purposes. The provided hierarchical levels correspond to the resolutions vector 32 * 2^(0:9) (minimum: 32 meters, maximum: 16384 meters). Beware that not all GRTS ranking numbers are present in the data source, as the original GRTS raster has been clipped with the Flemish outer borders (i.e., not excluding the Brussels Capital Region).