plotting dendrograms

Hi,

mva should come from the base -at least for Windows, but I think it does come with the base in any platforms.

MASS library is the VR package, which has "Various functions from the libraries of Venables and Ripley, `Modern Applied Statistics with S-PLUS' (3rd edition). "  You can get it from CRAN (http://cran.r-project.org/) and compile from source.

Hope this helps,

Kevin

-------------------------------------------------------------------------------------------- 
Ko-Kang Kevin Wang
Head of Statistical Analysis Division
Software Developers' Klub (SDK)
University of Auckland
New Zealand

-----Original Message-----
From: pauljohn at lark.cc.ku.edu [mailto:pauljohn at lark.cc.ku.edu]On Behalf Of Paul E Johnson
Sent: Tuesday, July 24, 2001 7:19 AM
To: Ko-Kang Wang
Subject: Re: [R] plotting dendrograms


In R 1.3 on linux, I don't have a function tree in MASS or mva. Where do
you get it?
 
I see this:

?tree

Error in help(tree) : No documentation for `tree' in specified packages
and libraries:
  you could try `help.search("tree")'

library(MASS)
?tree

Error in help(tree) : No documentation for `tree' in specified packages
and libraries:
  you could try `help.search("tree")'

library(mva)
?tree

Error in help(tree) : No documentation for `tree' in specified packages
and libraries:
  you could try `help.search("tree")'

pj

Hi David,

I found the mva library to be very useful in this case.  Functions like hclust() is pretty useful and you can specify the method you want to use (like kmeans...etc).

Even use tree(), I think it is possible to add text into it.  I had a look at the tree() documentation by typing:
    ?tree
and found an example:
     library(MASS)
     data(cpus)
     cpus.ltr <- tree(log10(perf) ~ syct+mmin+mmax+cach+chmin+chmax, cpus)
     cpus.ltr
     summary(cpus.ltr)
     plot(cpus.ltr);  text(cpus.ltr)

The last command text(cpus.ltr) adds in the text.

Hope this helps,

Kevin

------------------------------------------------------------------------------------------

Paul E. Johnson                       email: pauljohn at ukans.edu
Dept. of Political Science            http://lark.cc.ukans.edu/~pauljohn
University of Kansas                  Office: (785) 864-9086
Lawrence, Kansas 66045                FAX: (785) 864-5700
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