On Sun, Jan 17, 2010 at 10:39 PM, Andrew Hunter <ahun...@ucalgary.ca> wrote:
> Hi I am using Waller & Gotways Leukaemia data and am trying to create a > plot of county population using RColorBrewer using the following: > > plotvar <- NY8$POP8 > plotvar <- rank(plotvar) > nclr <- 8 > plotclr <- brewer.pal(nclr,"PuOr") > colornum <- cut(plotvar, nclr, labels=FALSE) > colorcode <- plotclr[colornum] > plot(NY8, fg=colorcode) > > But get the following error: > > > plot(NY8, fg=colorcode) > Error in plot.window(xlim = xlim, ylim = ylim, asp = asp, ...) : > graphical parameter "fg" has the wrong length > > fg contains 281 color assignments and there are 281 polygons in the NY > county data. > > You want 'col' and not 'fg'. See ?"SpatialPolygonsDataFrame-class" for an example. fg is used for axis and box colours, but plot doesn't draw axes or boxes for spatial polygons data frames. It should be length-1: # using data from that help: > plot(ex_1.7) > axis(1,fg="red") > axis(2,fg="blue") Barry -- blog: http://geospaced.blogspot.com/ web: http://www.maths.lancs.ac.uk/~rowlings web: http://www.rowlingson.com/ twitter: http://twitter.com/geospacedman pics: http://www.flickr.com/photos/spacedman [[alternative HTML version deleted]] _______________________________________________ R-sig-Geo mailing list R-sig-Geo@stat.math.ethz.ch https://stat.ethz.ch/mailman/listinfo/r-sig-geo
