[R] Re: persp() varying colors with "z" values.
Martin Maechler
maechler at stat.math.ethz.ch
Thu Feb 6 09:47:02 CET 2003
>>>>> "Gregory" == Gregory BENMENZER <gregory.benmenzer at gazdefrance.com>
>>>>> on Thu, 6 Feb 2003 09:17:41 +0100 writes:
Gregory> hello,
Gregory> you can use the persp() function. The shade=0.7
Gregory> option is very nice. With matlab, it is possible to
Gregory> change of colors automaticalli with the value to be
Gregory> plotted.
Gregory> Does someone know to do that ?
Yes. Look at the last plot of the persp() demo,
> demo(persp)
As you can see there you need two steps:
1) define a color vector, say `zCol' varying with your z variate
2) persp(x,y,z, col = zCol, ....)
I hope this helps.
>> f0z6305 at labs.tamu.edu@stat.math.ethz.ch on 06/02/2003 07:05:04
>> Pour : r-help at stat.math.ethz.ch
>> Objet : [R] About STEM Plot in R
Fred> Hey
Fred> Does anybody know if R can plot the 3-dimensinal
Fred> stem graphs?
Fred> In Matlab, there is such similare function to plot
Fred> 3D plots, stem3(X,Y, Z), where X, Y , Z (column vectors) are
Fred> coordinate values of data points.
Fred> Thanks.
Fred> Fred
Martin Maechler <maechler at stat.math.ethz.ch> http://stat.ethz.ch/~maechler/
Seminar fuer Statistik, ETH-Zentrum LEO C16 Leonhardstr. 27
ETH (Federal Inst. Technology) 8092 Zurich SWITZERLAND
phone: x-41-1-632-3408 fax: ...-1228 <><
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