All functions

tc_build_graph() tc_raster() tc_adj_matrix()

Build the graph that underlies travel cost calculations on a grid

tc_combine_edge_weights()

Combine the edge weights of two or more travelcost graphs

tc_cost()

Calculate the travel cost from one or more points to each point on a raster

tc_set_edge_weights()

Set the edge weights of a travelcost graph

tc_shortest_paths()

Calculate the shortest paths between points on a raster