DoU_classify_grid       Create the DEGURBA grid cell classification
DoU_classify_grid_rural
                        Create the DEGURBA grid cell classification of
                        rural cells
DoU_classify_grid_urban_centres
                        Create the DEGURBA grid cell classification of
                        urban centres
DoU_classify_grid_urban_clusters
                        Create the DEGURBA grid cell classification of
                        urban clusters
DoU_classify_grid_water
                        Create the DEGURBA grid cell classification of
                        water cells
DoU_classify_units      Create the DEGURBA spatial units classification
DoU_get_grid_parameters
                        Get the parameters for the DEGURBA grid cell
                        classification
DoU_get_optimal_builtup
                        Get the optimal built-up area threshold
DoU_load_grid_data_belgium
                        Load the grid data for Belgium to reconstruct
                        DEGURBA classification
DoU_plot_grid           Plot the grid cell classification
DoU_plot_units          Plot the spatial units classification
DoU_preprocess_grid     Preprocess the data for the DEGURBA grid cell
                        classification
DoU_preprocess_units    Preprocess the data for the DEGURBA spatial
                        units classification
GHSL_tiles              A dataframe with existing GHSL tiles
GHSL_tiles_per_region   Division of GHSL tiles in 9 regions
apply_majority_rule     Apply the majority rule algorithm
apply_threshold         Identify urban areas by applying a threshold on
                        grid cells
convert_regions_to_grid
                        Convert regions to a grid
crop_GHSLdata           Crop GHSL data to the provided extent
download_GHSLdata       Download data products from the GHSL website
fill_gaps               Fill gaps in clusters of cells
get_adjacent            Identify adjacent cells
get_clusters            Identify clusters of cells that meet the
                        criteria
get_patches             Detect patches of cells
load_proxies_belgium    Load the data for three urban proxies for
                        Belgium
units_belgium           Spatial units of Belgium
