[R] how to make a contour plot in R?

[Romain Francois]

Le 13.03.2006 15:58, Arnau Mir Torres a écrit :
> Hello.
>
> I am an nxn data frame in the variable frame.
> I want to make a contour plot with it. That is, I want to plot a square 
> of dimensions [1,n]x[1,n] with the  gray level of square [i,i+1]x[j,j+1] 
> equal to frame[i,j].
>
> How can I make it?
>
> Thanks,
>
> Arnau.
>   
Hi,

it feels that you want to use ?image with a grey level palette :
R> z <- matrix(runif(100), nc=10)
R> image(z, col=gray(0:10/10))

Also, check ?palette, ?colorRampPalette and the links therein.

HTH

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| Romain FRANCOIS - http://francoisromain.free.fr               |
| Doctorant INRIA Futurs / EDF                                  |
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