R help - Jul 2007 - persp and greek symbols in the axes labels

Hello,

I am plotting a 3D function using persp and I would like to use greek 
symbols in the axes labels.
I  have found examples like  this one on the web:

plot(0,0,xlab=expression(kappa[lambda]),ylab=substitute(paste(phi,"=",true,sigma),list(true=5)))

this works well with plot but not with persp:
with the command

persp(M,theta = -20,phi = 
0,xlab=expression(kappa[lambda]),ylab=substitute(paste(phi,"=",true,sigma),list(true=5)),zlab
= "Z")

I get the labels as in toto.eps

Any suggestion? Thanks!

Nathalie

-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~   
INRA  Toulouse - Unit? de Biom?trie et  Intelligence Artificielle 
Chemin de Borde-Rouge BP 52627 31326 CASTANET-TOLOSAN cedex FRANCE 
Tel : +33(0)5.61.28.54.39 - Fax : +33(0)5.61.28.53.35
Web :http://mia.toulouse.inra.fr/index.php?id=217
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


-------------- next part --------------
A non-text attachment was scrubbed...
Name: toto.eps
Type: application/postscript
Size: 18184 bytes
Desc: not available
Url :
https://stat.ethz.ch/pipermail/r-help/attachments/20070723/d5dc7c6e/attachment.eps

Hi,

I have been tried to apply hopach HOPACH in R to cluster some genes.  My 
data is a binary matrix.  It works well for the whole set of genes (say, 
1000 genes).  Then I selected a subset of the genes (say 300 genes).  These 
genes are selected based on the regression analysis results for each of the 
1000 genes and only those with highly correlations with specific sample 
types got selected.  With the subset of the genes (300), when I run HOPACH, 
the hopach stuck there for ever, and the CPU occupation kePT 100% as well.  


So I am wondering if there is any restrictions in applying HOPACH commend. 
Apparently, this stuck is not because of memory issue based on the CPU 
monitor.  I will really appreicate any share of comments, thoughts or 
suggestions.  

Thanks very much!

Regards, Katy

I don't know why it doesn't work but I think people generally recommend
that
you use wireframe() in lattice rather than persp(), because wireframe is more
customizable (the pdf document referred to in this post is pretty good):
http://tolstoy.newcastle.edu.au/R/e2/help/07/03/12534.html

Here's an example:

library(lattice)
library(reshape)
x <- 1:5
y <- 1:3
z <- matrix(1:15,ncol=3,dimnames=list(NULL,y))
M <- melt(data.frame(x,z,check.names=FALSE),id=1,variable="y")
wireframe(value~x*y,data=M,
          screen=list(z=45,x=-75),
          xlab=expression(kappa[lambda]),
          ylab=as.expression(substitute(paste(phi,"=",true,sigma),
              list(true=5))),
          zlab = "Z")

[you can play around with the 'screen' argument to rotate the view,
analogous
to phi and theta in persp()]


--- Nathalie Peyrard <Nathalie.Peyrard at toulouse.inra.fr> wrote:
> Hello,
> 
> I am plotting a 3D function using persp and I would like to use greek 
> symbols in the axes labels.
> I  have found examples like  this one on the web:
> 
>
plot(0,0,xlab=expression(kappa[lambda]),ylab=substitute(paste(phi,"=",true,sigma),list(true=5)))
> 
> this works well with plot but not with persp:
> with the command
> 
> persp(M,theta = -20,phi = 
>
0,xlab=expression(kappa[lambda]),ylab=substitute(paste(phi,"=",true,sigma),list(true=5)),zlab
> 
> = "Z")
> 
> I get the labels as in toto.eps
> 
> Any suggestion? Thanks!
> 
> Nathalie
> 
> -- 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~   
> INRA  Toulouse - Unit? de Biom?trie et  Intelligence Artificielle 
> Chemin de Borde-Rouge BP 52627 31326 CASTANET-TOLOSAN cedex FRANCE 
> Tel : +33(0)5.61.28.54.39 - Fax : +33(0)5.61.28.53.35
> Web :http://mia.toulouse.inra.fr/index.php?id=217
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 
> 
> > ______________________________________________
> R-help at stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
> 


       
____________________________________________________________________________________Ready
for the edge of your seat?
Check out tonight's top picks on Yahoo! TV.