only plot borders of a region in a scatter plot
... note the typo. It's: contour( basiinID == ID, level=0.5) :-) -- Bert Bert Gunter "The trouble with having an open mind is that people keep coming along and sticking things into it." -- Opus (aka Berkeley Breathed in his "Bloom County" comic strip ) On Thu, Aug 4, 2016 at 8:03 AM, William Dunlap via R-help
<r-help at r-project.org> wrote:
If 'basinID' is the matrix of basin identifiers you could draw an outline of the basin with identifier 'ID' with coutour( basiinID == ID, level=0.5) Add 'add=TRUE' if you are overlaying this on an existing plot. Bill Dunlap TIBCO Software wdunlap tibco.com On Thu, Aug 4, 2016 at 1:51 AM, Zun Yin <yinzun2000 at gmail.com> wrote:
D ear all, I have a matrix with ID of river basins (integer numbers). Now I want to highlight one river basin in a map by plotting only the border. Like the attached figure. Two river basins are highlighted by polygons. It is created by ferret, but I prefer to implement it by R. Anybody know how to do it? Thanks a lot. Cheers, Zun Yin
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______________________________________________ R-help at r-project.org mailing list -- To UNSUBSCRIBE and more, see 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.