Hello list I am making reference to the graph gallery at http://r-spatial.sourceforge.net/gallery I was wondering how one would go about adding elevation contour lines to the example fig08? Presuming that one would have access to a number of geo-referenced elevation measurements with a similar density as the sampling locations indicated with a grey x in fig08. Is there a method to generate contour lines from such information and overlay it onto the existing interpolated graph?
Cheers Karl Sommer _________________________________ Karl J Sommer, Department of Primary Industries, Catchment & Agriculture Services, PO Box 905 Mildura, VIC, Australia 3502 Tel: +61 (0)3 5051 4390 Fax +61 (0)3 5051 4534 Email: [EMAIL PROTECTED] _______________________________________________ R-sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-geo