Re: [R] plot.Map with pattern instead of colors
Dear Roger, thank you for your valuable hints regarding plot.polylist, Map2poly and RColorBrewer( , Greys ). Adding pattern to some shapes with plot( Map2poly( x ), density = myDensities, add = TRUE ) works great! Best wishes, Arne On Monday 20 September 2004 14:20, Roger Bivand wrote: On Mon, 20 Sep 2004, Arne Henningsen wrote: Hi, I am plotting shapefiles with plot.Map (package maptools). So far I use different colors for the shapes depending on the a value that belongs to the shape. Now, I need to produce maps only in black, gray and white for publication. Is it possible to fill shapes with pattern (e.g. hatched) instead of colors? Not in plot.Map(). This is supported if you convert the shapefile polygons to a polylist object (Map2poly()), then use plot.polylist() - but this may not be your choice. Within plot.Map, I would suggest using the RColorBrewer package and the sequential Greys palette, which differentiates five grey colours very well for most media. If you run this after example(plot.Map), it should illustrate a solution: library(RColorBrewer) pal - brewer.pal(5, Greys) fgs - pal[findInterval(x$att.data$BIR74, res$breaks, all.inside=TRUE)] plot(x, fg=fgs) for the default quantile breaks. Details of a simplified example: I want to show the percentage change of a variable in a map: e.g. following levels a) +10 b) +5% to +10% c) -5% to +5% d) -10% to -5% e) -10% Now I have following colors a) red b) orange c) white d) greenyellow e) green3 Printing this on a monochrome printer is - of course - stupid, because levels a) and e) as well as b) and d) have approximately the same grayscale. I could fill a) = black and e) = white, and everything inbetween with an appropriate grayscale, but I prefer to have areas with no change to appear white rather than medium gray. Therefore, I thought of doing following: a) black b) gray c) white d) hatched with thin lines e) hatched with thick lines (or double-hatched) Any hints and ideas are welcome! (BTW: I use R 1.9.1 on SuSE Linux 9.0) Thanks, Arne -- Arne Henningsen Department of Agricultural Economics University of Kiel Olshausenstr. 40 D-24098 Kiel (Germany) Tel: +49-431-880 4445 Fax: +49-431-880 1397 [EMAIL PROTECTED] http://www.uni-kiel.de/agrarpol/ahenningsen/ __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
[R] plot.Map with pattern instead of colors
Hi, I am plotting shapefiles with plot.Map (package maptools). So far I use different colors for the shapes depending on the a value that belongs to the shape. Now, I need to produce maps only in black, gray and white for publication. Is it possible to fill shapes with pattern (e.g. hatched) instead of colors? Details of a simplified example: I want to show the percentage change of a variable in a map: e.g. following levels a) +10 b) +5% to +10% c) -5% to +5% d) -10% to -5% e) -10% Now I have following colors a) red b) orange c) white d) greenyellow e) green3 Printing this on a monochrome printer is - of course - stupid, because levels a) and e) as well as b) and d) have approximately the same grayscale. I could fill a) = black and e) = white, and everything inbetween with an appropriate grayscale, but I prefer to have areas with no change to appear white rather than medium gray. Therefore, I thought of doing following: a) black b) gray c) white d) hatched with thin lines e) hatched with thick lines (or double-hatched) Any hints and ideas are welcome! (BTW: I use R 1.9.1 on SuSE Linux 9.0) Thanks, Arne -- Arne Henningsen Department of Agricultural Economics University of Kiel Olshausenstr. 40 D-24098 Kiel (Germany) Tel: +49-431-880 4445 Fax: +49-431-880 1397 [EMAIL PROTECTED] http://www.uni-kiel.de/agrarpol/ahenningsen/ __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Re: [R] plot.Map with pattern instead of colors
On Mon, 20 Sep 2004, Arne Henningsen wrote: Hi, I am plotting shapefiles with plot.Map (package maptools). So far I use different colors for the shapes depending on the a value that belongs to the shape. Now, I need to produce maps only in black, gray and white for publication. Is it possible to fill shapes with pattern (e.g. hatched) instead of colors? Not in plot.Map(). This is supported if you convert the shapefile polygons to a polylist object (Map2poly()), then use plot.polylist() - but this may not be your choice. Within plot.Map, I would suggest using the RColorBrewer package and the sequential Greys palette, which differentiates five grey colours very well for most media. If you run this after example(plot.Map), it should illustrate a solution: library(RColorBrewer) pal - brewer.pal(5, Greys) fgs - pal[findInterval(x$att.data$BIR74, res$breaks, all.inside=TRUE)] plot(x, fg=fgs) for the default quantile breaks. Details of a simplified example: I want to show the percentage change of a variable in a map: e.g. following levels a) +10 b) +5% to +10% c) -5% to +5% d) -10% to -5% e) -10% Now I have following colors a) red b) orange c) white d) greenyellow e) green3 Printing this on a monochrome printer is - of course - stupid, because levels a) and e) as well as b) and d) have approximately the same grayscale. I could fill a) = black and e) = white, and everything inbetween with an appropriate grayscale, but I prefer to have areas with no change to appear white rather than medium gray. Therefore, I thought of doing following: a) black b) gray c) white d) hatched with thin lines e) hatched with thick lines (or double-hatched) Any hints and ideas are welcome! (BTW: I use R 1.9.1 on SuSE Linux 9.0) Thanks, Arne -- Roger Bivand Economic Geography Section, Department of Economics, Norwegian School of Economics and Business Administration, Breiviksveien 40, N-5045 Bergen, Norway. voice: +47 55 95 93 55; fax +47 55 95 93 93 e-mail: [EMAIL PROTECTED] __ [EMAIL PROTECTED] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
