CH_migration_data       CH_migration_data
add_flowmap             Add a flow map to a ggplot
add_flowmap_list        Add a list of flow maps to a ggplot, creating a
                        list of plots
cantons                 cantons
flowmap_sf              Export flow edges and nodes as simple features.
get_circle_coords       Helper function to create coordinates for
                        circles of nodes
hca_flowdat             Use hierarchical clustering to merge nodes
                        based on proximity
prep_flowmap            prep_flowmap
short_scale             Create short scale format for numbers in the
                        legend
util_data_flow_to_flowdat
                        util_data_flow_to_flowdat
