pop2point               Assign raster cell population density values to
                        points
ua_binary_compare       Statistically compare UA values between two
                        spatial groups
ua_export               Export results to the form required for the
                        front-end app
ua_extract_osm          Extract network data with osmium, convert to
                        'sc' format, and collate all results into a
                        single 'osmdata' object.
ua_index                Calculate "UA_index" for a specified set of
                        origin locations.
ua_index_batch          Batch calculation of 'ua_index' for a single
                        city
ua_interpolate          Interpolate "UA_index" between vertices on
                        network, project those on to the original
                        network edges, and return the full network
                        graph.
ua_osm_to_sc            Convert a series of '.osm' files to 'silicate'
                        format, and combine all into a single object.
ua_plot_network         Generate an interactive plot of results from
                        'ua_interpolate' projected on to street
                        network.
ua_plot_polygons        Generate an interactive plot of results in same
                        polygons as original socio-demographic data.
ua_prepare_data         Additional data preparation beyond standard
                        'm4ra' routines
ua_to_geojson           Write UA index data to local 'geojson' file
ua_vertices             Extract vertices within perimiter of external
                        data set
