Displaying 3 results from an estimated 3 matches for "cozzetto".
2005 Apr 20
4
results from sammon()
Dear all,
I'm trying to get a two dimensional embedding of some data using different
meythods, among which princomp(), cmds(), sammon() and isoMDS(). I have a
problem with sammon() because the coordinates I get are all equal to NA.
What does it mean? Why the method fails in finding the coordinates? Can I do
anything to get some meaningful results?
Thank you very much
Domenico
2005 Oct 10
1
details about lm()
...se another method?
I also have another question: How does lm() choose the point through which
the output straight line goes in order to compute the values of its slope
and intercept?
I would be very grateful if anyone could help me.
Domenico
*********************************************
Domenico Cozzetto
Biocomputing group
Department of Biochemical Sciences
"A. Rossi Fanelli"
University of Rome "La Sapienza"
P.le Aldo Moro, 5 - 00185 Rome
Tel: +39 06 49690276
Fax: +39 06 4400062
URL: http://cassandra.bio.uniroma1.it/~cozzetto/
2005 Apr 20
0
I: results from sammon()
...ssimilarities. This is the only case in
which sammon(), from the MASS package, gives me this kind of problems.
Domenico
>
> > -----Messaggio originale-----
> > Da: Jari Oksanen [mailto:jarioksa at sun3.oulu.fi]
> > Inviato: mercoled?? 20 aprile 2005 11.53
> > A: Domenico Cozzetto
> > Cc: R-News
> > Oggetto: Re: [R] results from sammon()
> >
> >
> > On Wed, 2005-04-20 at 10:35 +0200, Domenico Cozzetto wrote:
> > > Dear all,
> > > I'm trying to get a two dimensional embedding of some data
> > using different
> >...