[R] results from sammon()

2005-04-20 Thread Domenico Cozzetto
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

Re: [R] results from sammon()

2005-04-20 Thread Jari Oksanen
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 meythods, among which princomp(), cmds(), sammon() and isoMDS(). I have a problem with sammon() because the coordinates I get are all equal to NA.

I: [R] results from sammon()

2005-04-20 Thread Domenico Cozzetto
: mercoledì 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 meythods, among which princomp

[R] results from sammon()

2005-04-20 Thread Domenico Cozzetto
: 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 meythods, among which princomp(), cmds(), sammon() and isoMDS(). I have a problem with sammon

Re: [R] results from sammon()

2005-04-20 Thread Jari Oksanen
On Wed, 2005-04-20 at 12:35 +0200, Domenico Cozzetto wrote: Thanks for the attention paid to my rpoblem. Please find enclosed the matrix with my dissimilarities. This is the only case in which sammon(), from the MASS package, gives me this kind of problems. I'm using the implementation of