Using R, I'd like to find all census tracts within a given distance of a point (lon,lat).
i.e. All census tracts within 20 miles of 34.0522, 118.2428
I have used the sp library and over command to locate the tract of a given point, but would like to use it to find all the tracts covered by a "disc".
Ideas?
أكثر...
i.e. All census tracts within 20 miles of 34.0522, 118.2428
I have used the sp library and over command to locate the tract of a given point, but would like to use it to find all the tracts covered by a "disc".
Ideas?
أكثر...