On 7/30/07, Jenny Barnes <[EMAIL PROTECTED]> wrote: > Dear Deepayan > > Thank you for your response - it has proved very very helpful, I can't thank > you > enough! > > I have another question for you if you have time to reply. I know you have > been > asked about the colour of the polygon outline before (27 April 2007) and you > replied that is a bug and the border can only be black or transparent... > > I was wondering if you have found a way to change the colour of the outline > since this correspondence? If not please can you tell me how to get around > this > myself? You mentioned writing a replacement to lpolygon - I do not know how to > do this - would it be possible for you to guide me further?
That should have been fixed by now. Is there anything that's not working as you expect? My code had: lapply(add.cl, panel.polygon, border = 'red') which should have made the borders red. If it doesn't, you probably need to upgrade to a recent version of R/lattice. If it does, changing it to border='white' should suffice. If that doesn't work, please provide a reproducible example. -Deepayan > I would really benefit from having the border of the polygon in white as it > goes > over the "sea" which is also white and would therefore only be seen over the > "land", much neater! > > Many thanks, > > Jenny > > > > On 7/24/07, Jenny Barnes <jmb_at_mssl.ucl.ac.uk> wrote: > > Dear R-Help community, > > > > I am trying to overlay a single contour line over a correlation plot using > > levelplot in the lattice package. These are the two arrays: > > > > 1) a correlation plot over Africa - so each grid square is a different > > colour > > dependent on correlation - this is in an array: result_cor with dim[465,465] > > > > 2) a single contour line from a ***different data source*** - this is from > data > > related to the p-values for the above correlation plot - I want to overlay > only > > the 95% confidence contour. The p-values are stored in an array: > result.p.values > > with same dimensions as above. > > > > I have read about using panel.levelplot and panel.contourplot in the R-help > > mailing list but I don't know the right way to call two different data > > arrays, > > can anybody help me please? I appreciate your time and help with this > question. > > I can think of a couple of different ways, but the simplest will probably be > to > compute the single contour beforehand and add it after the standard levelplot > using a panel function. E.g., using the 'volcano' data for both matrices: > > ## you need the explicit x and y arguments because ## the default is different > from levelplot. > > vcl <- contourLines(x = seq_len(nrow(volcano)), > > y = seq_len(ncol(volcano)), > z = volcano, > levels = c(172, 182)) > > levelplot(volcano, add.cl = vcl, > panel = function(..., add.cl) { > panel.levelplot(...) > lapply(add.cl, panel.polygon, border = 'red') > }) > > > -Deepayan ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > Jennifer Barnes > PhD student: long range drought prediction > Climate Extremes Group > Department of Space and Climate Physics > University College London > Holmbury St Mary > Dorking, Surrey, RH5 6NT > Web: http://climate.mssl.ucl.ac.uk > > ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.