Extract Latitude and Longitude from WKT polygons
wkt_coords extracts lat/long values from WKT polygons,
specifically the outer shell of those polygons (working on the assumption
that said outer edge is what you want).
Because it assumes coordinates, it also assumes a sphere - say, the earth - and uses spherical coordinate values.
wkt_coords(wkt)
wkt |
a character vector of WKT objects |
a data.frame of four columns; object (containing which object
the row refers to), ring containing which layer of the object the row
refers to, lng and lat.
wkt_bounding() to extract a bounding box, and wkt_centroid()
to extract the centroid.
wkt_coords("POLYGON ((30 10, 40 40, 20 40, 10 20, 30 10))")Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.