plot(bclust) what is the 2nd plot? - R-help

Wed, Mar 9, 2005 2:36 AM #

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Friedrich Leisch

Wed, Mar 9, 2005 3:14 AM #

> Hi everyone,
  > Currently i'm trying to understand the bagged clustering algorithm, bclust
  > {e1071}. 
 
  > When I run the given example in the help file (as below)
  >   data(iris)
  >      bc1 <- bclust(iris[,1:4], 3, base.centers=5)
  >      plot(bc1)

  > and plot the bclust object, 2 graphs are produced. 
  > The first is a dendrogram, but what is the second plot? The axes are not
  > labelled and what do the two lines represent?

 
The monotonic decreasing line gives the relative height of the split
of tyhe tree into 2, 3, etc. branches, the second line is the first
differences of the first. A peak in the differencescan be used as a
crude estimation for the number of clusters.

  > I tried looking in the URL
  > given in the references but that didn't help.

Look at Section IV.A of the working paper.

HTH,

-------------------------------------------------------------------
                        Friedrich Leisch 
Institut f?r Statistik                     Tel: (+43 1) 58801 10715
Technische Universit?t Wien                Fax: (+43 1) 58801 10798
Wiedner Hauptstra?e 8-10/1071
A-1040 Wien, Austria             http://www.ci.tuwien.ac.at/~leisch

Zhesi He

Wed, Mar 9, 2005 3:27 AM #

Dear all,

I was trying to install RSPYTHON on my Mac OS X 10.3 into R, and got 
the following errors, is it because of my C compiler or the python I 
installed?


R CMD INSTALL -c Desktop/RSPython_0.5-4.tar.gz
* Installing *source* package 'RSPython' ...
checking for python... /usr/bin/python
Python version 2.3
Using threads
checking for gcc... gcc
checking for C compiler default output... configure: error: C compiler 
cannot create executables
See `config.log' for more details.
ERROR: configuration failed for package 'RSPython'
** Removing 
'/Applications/StartR.app/RAqua.app/Contents/library/RSPython'

Thanks in advance.


___________________________________________________

Zhesi He
Computational Biology Laboratory, University of York
York YO10 5YW, U.K.
Phone:  +44-(0)1904-328279
Email:  zh107 at york.ac.uk

Brian Ripley

Wed, Mar 9, 2005 5:02 AM #

Without seeing config.log, we have no more idea than you do.

This is an Omegahat package, and either its list or the R-sig-mac list 
would be far more appropriate than this one.  But I suspect the answer is 
clear from config.log -- unpack the package before installing to see it.

On Wed, 9 Mar 2005, Zhesi He wrote:

Brian D. Ripley,                  ripley at stats.ox.ac.uk
Professor of Applied Statistics,  http://www.stats.ox.ac.uk/~ripley/
University of Oxford,             Tel:  +44 1865 272861 (self)
1 South Parks Road,                     +44 1865 272866 (PA)
Oxford OX1 3TG, UK                Fax:  +44 1865 272595

Zhesi He

Wed, Mar 9, 2005 3:25 PM #

Dear Prof Brian Ripley,

I downloaded RSPython install tar file from other sites and get the 
same results.
After extract the file and configuer, I still get the same error.
Here I attached the config.log file. And there's not much information I 
can get from basic config info. Please advise on this.

Thanks,
Zhesi.

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On 9 Mar 2005, at 13:02, Prof Brian Ripley wrote: