Hi,
Peter Alspach schrieb:
Tena korua
Also, bear in mind that colours can be specified as grey0 - grey100;
i.e., paste('grey', round(100*z/max(z), 0), sep='').
or a lot easier using the built-in function
col=gray(z/max(z))
Also, the
colorspace package is worth considering if you are not restricted to
black and white.
HTH ....
Peter Alspach
-----Original Message-----
From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-
project.org] On Behalf Of Steve Lianoglou
Sent: Friday, 26 March 2010 11:45 a.m.
To: Babaorumi
Cc: r-help@r-project.org
Subject: Re: [R] Absolutely No idea how to plot my Spatial Data
Hi,
On Thu, Mar 25, 2010 at 5:32 PM, Babaorumi
<gildas.mazo.u...@gmail.com>
wrote:
Hi,
I have a data set of points which are represented by 3 variables
x,y,z where
x is the position of the point on the x-absciss and y on the y-
absciss. Each
of my points has a value z, which I want to be displayed as follows:
the
more z is high, the more the color on the map is dark.
How about just tweaking the alpha/transparency for each point as a
function of its value.
See this thread for inspiration:
http://thread.gmane.org/gmane.comp.lang.r.general/158649
HTH,
-steve
--
Steve Lianoglou
Graduate Student: Computational Systems Biology
| Memorial Sloan-Kettering Cancer Center
| Weill Medical College of Cornell University
Contact Info: http://cbio.mskcc.org/~lianos/contact
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--
Eik Vettorazzi
Institut für Medizinische Biometrie und Epidemiologie
Universitätsklinikum Hamburg-Eppendorf
Martinistr. 52
20246 Hamburg
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