Use the osmdata package to extract the street network for a given location. For routing between a given set of points (passed as pts), the bbox argument may be omitted, in which case a bounding box will be constructed by expanding the range of pts by the relative amount of expand.

dodgr_streetnet(bbox, pts = NULL, expand = 0.05, quiet = TRUE)



Bounding box as vector or matrix of coordinates, or location name. Passed to osmdata::getbb.


List of points presumably containing spatial coordinates


Relative factor by which street network should extend beyond limits defined by pts (only if bbox not given).


If FALSE, display progress messages


A Simple Features (sf) object with coordinates of all lines in the street network.


if (FALSE) { streetnet <- dodgr_streetnet ("hampi india", expand = 0) # convert to form needed for `dodgr` functions: graph <- weight_streetnet (streetnet) nrow (graph) # around 5,900 edges # Alternative ways of extracting street networks by using a small selection # of graph vertices to define bounding box: verts <- dodgr_vertices (graph) verts <- verts [sample (nrow (verts), size = 200), ] streetnet <- dodgr_streetnet (pts = verts, expand = 0) graph <- weight_streetnet (streetnet) nrow (graph) # This will generally have many more rows because most street networks # include streets that extend considerably beyond the specified bounding box. # bbox can also be a polygon: bb <- osmdata::getbb ("gent belgium") # rectangular bbox nrow (dodgr_streetnet (bbox = bb)) # around 30,000 bb <- osmdata::getbb ("gent belgium", format_out = "polygon") nrow (dodgr_streetnet (bbox = bb)) # around 17,000 # The latter has fewer rows because only edges within polygon are returned }