Question:manipulating spatial data using combination of Maptools and Splancs
On Sat, 17 Sep 2005, kostas karis wrote:
Thank you for your advice but i still have a problem...Everything goes fine till the plotting (as usual).When i try the code you posted for the conversion i get the following message: Error in coordinates(quakes) : no direct or inherited method for function 'coordinates' for this call i don't have a clue what this means...
Please always include the commands you gave, here in particular the command(s) creating the quakes object - other list participants cannot see your computer screen. All the error message says is that it is not a SpatialPoints* object, so you have not done:
quakes <- readShapePoints("quakes.shp")
quakes_pts <- coordinates(quakes)
as I suggested. I also suggest moving this thread to the R-sig-geo list - subscription details on the "Spatial" Task View on CRAN: http://cran.r-project.org/src/contrib/Views/Spatial.html
Roger Bivand Economic Geography Section, Department of Economics, Norwegian School of Economics and Business Administration, Helleveien 30, N-5045 Bergen, Norway. voice: +47 55 95 93 55; fax +47 55 95 95 43 e-mail: Roger.Bivand at nhh.no