Reads a GraphML file written by ox_save_graphml() back into an
osm_graph, restoring node coordinates, edge attributes and
edge geometry (from the stored WKT).
Value
An osm_graph.
Examples
g <- example_osm_graph()
f <- tempfile(fileext = ".graphml")
ox_save_graphml(g, f)
ox_load_graphml(f)
#>
#> ── osm_graph ───────────────────────────────────────────────────────────────────
#> 16 nodes, 48 edges
#> Network type: "unknown"
#> Simplified: FALSE
#> CRS: "PROJCRS[\"WGS 84 / Pseudo-Mercator\", BASEGEOGCRS[\"WGS 84\",
#> ENSEMBLE[\"World Geodetic System 1984 ensemble\", MEMBER[\"World Geodetic
#> System 1984 (Transit)\"], MEMBER[\"World Geodetic System 1984 (G730)\"],
#> MEMBER[\"World Geodetic System 1984 (G873)\"], MEMBER[\"World Geodetic System
#> 1984 (G1150)\"], MEMBER[\"World Geodetic System 1984 (G1674)\"], MEMBER[\"World
#> Geodetic System 1984 (G1762)\"], MEMBER[\"World Geodetic System 1984
#> (G2139)\"], ELLIPSOID[\"WGS 84\",6378137,298.257223563,
#> LENGTHUNIT[\"metre\",1]], ENSEMBLEACCURACY[2.0]], PRIMEM[\"Greenwich\",0,
#> ANGLEUNIT[\"degree\",0.0174532925199433]], ID[\"EPSG\",4326]],
#> CONVERSION[\"Popular Visualisation Pseudo-Mercator\", METHOD[\"Popular
#> Visualisation Pseudo Mercator\", ID[\"EPSG\",1024]], PARAMETER[\"Latitude of
#> natural origin\",0, ANGLEUNIT[\"degree\",0.0174532925199433],
#> ID[\"EPSG\",8801]], PARAMETER[\"Longitude of natural origin\",0,
#> ANGLEUNIT[\"degree\",0.0174532925199433], ID[\"EPSG\",8802]], PARAMETER[\"False
#> easting\",0, LENGTHUNIT[\"metre\",1], ID[\"EPSG\",8806]], PARAMETER[\"False
#> northing\",0, LENGTHUNIT[\"metre\",1], ID[\"EPSG\",8807]]], CS[Cartesian,2],
#> AXIS[\"easting (X)\",east, ORDER[1], LENGTHUNIT[\"metre\",1]], AXIS[\"northing
#> (Y)\",north, ORDER[2], LENGTHUNIT[\"metre\",1]], USAGE[ SCOPE[\"Web mapping and
#> visualisation.\"], AREA[\"World between 85.06°S and 85.06°N.\"],
#> BBOX[-85.06,-180,85.06,180]], ID[\"EPSG\",3857]]"