R help - Oct 2000 - Silhouette plot labels in package cluster

Hello everybody:

I have just started using R, specifically the clustering packages. Despite
the vastness of the functionality of the system, I have found it very
flexible and intuitive. It has been great fun to experiment with it.
Nevertheless, I am under tight time constraints to complete a cluster
analysis of some data and need to come up with a "quick" solution for
the
following problem:  When I call the plot() function with a pam.object and
try to write labels for the individual objects in the silhouette plots,
rather than the object number, it appears that the length of the strings
allowed for the labels is limited to 5 characters. Is this an intrinsic
limitation? Is there a way to work around this limitation?

Thank you very much for your help and thanks for a great piece of software!

Massimo Sassaroli, D.Sc.
____________________________________________
Massimo Sassaroli
Dept. of Physiology and Biophysics, Box 1218
Mount Sinai School of Medicine
One Gustave L. Levy Place
New York, NY 10029
Tel:(212) 241-9512  FAX:(212) 860-3369
email: massimo at inka.mssm.edu

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>>>>> "Massimo" == Massimo Sassaroli <massimo at
inka.mssm.edu> writes:
(Oct 31)

    Massimo> I have just started using R, specifically the clustering
    Massimo> packages. Despite the vastness of the functionality of the
    Massimo> system, I have found it very flexible and intuitive. It has
    Massimo> been great fun to experiment with it.  Nevertheless, I am
    Massimo> under tight time constraints to complete a cluster analysis of
    Massimo> some data and need to come up with a "quick" solution
for the
    Massimo> following problem: When I call the plot() function with a
    Massimo> pam.object and try to write labels for the individual objects
    Massimo> in the silhouette plots, rather than the object number, it
    Massimo> appears that the length of the strings allowed for the labels
    Massimo> is limited to 5 characters. Is this an intrinsic limitation?
    Massimo> Is there a way to work around this limitation?

yes, fix the function definitions :-)

Of course your `tight time constraints' are now over anyway...

The reason I'm writing:
In the last few days I've also extensively made use of
the `cluster' package, and found myself that the plotting functions are not
really flexible enough sometimes.

I've fixed many of them and also improved on the help files of cluster
(some of which come out with text in the wrong order).

I plan to shortly submit my patches to Kurt Hornik, the official maintainer
of "cluster".

Before that, I'd be quite interested in wishes,
feedback from you and other users, if you have!

    Massimo> Thank you very much for your help and thanks for a great piece
    Massimo> of software!

you're welcome.

Martin Maechler <maechler at stat.math.ethz.ch>
http://stat.ethz.ch/~maechler/
Seminar fuer Statistik, ETH-Zentrum  LEO D10	Leonhardstr. 27
ETH (Federal Inst. Technology)	8092 Zurich	SWITZERLAND
phone: x-41-1-632-3408		fax: ...-1228			<><
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