create a regular grid, subset it with over() and plot it with the sp.layout argument of spplot().
HTH, Tom Am 05.12.2011 16:36, schrieb ElenaC:
Dear all, is there a simple way to add stippling to a map? I have my data as a SpatialGrid data frame, with a column for a prediction value and another for its standard deviation. I create color maps from the prediction, and would like to indicate which areas of the map are statistically significant (prediction is greater than the standard deviation) by plotting regular dots on top, similar to what they do in the plots b and d of the figure: http://www.ipcc.ch/graphics/ar4-wg1/jpg/fig-10-18.jpg Id appreciate any suggestion! Best regards, Elena -- View this message in context: http://r-sig-geo.2731867.n2.nabble.com/Stippling-tp7063274p7063274.html Sent from the R-sig-geo mailing list archive at Nabble.com. _______________________________________________ R-sig-Geo mailing list [email protected] https://stat.ethz.ch/mailman/listinfo/r-sig-geo
-- Technische Universität München Department für Pflanzenwissenschaften Lehrstuhl für Grünlandlehre Alte Akademie 12 85350 Freising / Germany Phone: ++49 (0)8161 715324 Fax: ++49 (0)8161 713243 email: [email protected] http://www.wzw.tum.de/gruenland _______________________________________________ R-sig-Geo mailing list [email protected] https://stat.ethz.ch/mailman/listinfo/r-sig-geo
