Message-ID: <CAF8bMcbNVgHbZhBJG1+DeR8w_0nyPDyR6HR-i4Dn3bw2SO9=yw@mail.gmail.com>
Date: 2016-08-04T15:03:28Z
From: William Dunlap
Subject: only plot borders of a region in a scatter plot
In-Reply-To: <CA+cZ=Yo_RVG18+==rcN8gfTnf1OG_dV1p=Za5_q3kTSyvd-dNQ@mail.gmail.com>
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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