[R] Surface plot

Cashorali, Tanya Tanya.Cashorali at childrens.harvard.edu
Wed Mar 15 23:23:39 CET 2006

Hi, thanks for the help but I'm still having issues.

Basically, I have two matrices of equal dimension, one should produce
something similar to a heatmap.. The 2nd matrix should be the "heights"
for each value of the heatmap - producing a sort of surface plot.

Viewing this seems like a problem too, as I need to scale the x axis so
that ~140 labels are visible. 

Maybe wireframe isn't the way to go?  I've tried persp() too.

Thank you!!

-----Original Message-----
From: Uwe Ligges [mailto:ligges at statistik.uni-dortmund.de] 
Sent: Tuesday, March 14, 2006 3:22 AM
To: Cashorali, Tanya
Cc: r-help at stat.math.ethz.ch
Subject: Re: [R] Wireframe axis labels

Cashorali, Tanya wrote:

> Hi,
> I'm trying to do a surface plot using the wireframe function.
> Everything is working beautifully except that I want to be able to 
> re-scale it a LOT so that I can fit ~145 labels on the x-axis or
> I've tried using zoom, scales, aspect, .. nothing seems to work.  The 
> help on wireframe in R says that you can input a list of labels for 
> any of the axes, but this has also failed.

Hmmmm, you can do so, but I do not believe you really want 145

g <- expand.grid(x = 1:145, y = 1:145, gr = 1:2) g$z <- log((g$x^g$g +
g$y^2) * g$gr)

wireframe(z ~ x * y, data = g, groups = gr,
           scales = list(arrows = FALSE, at=1:145))

Uwe Ligges

> Thanks for any help!
> -Tanya
> 	[[alternative HTML version deleted]]
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