[R] error running sammon

[Prof Brian Ripley]

Which package is the sammon() you are using in?  (There such functions in 
TWO packages.)

On Mon, 14 Jun 2004, Greg Blevins wrote:

> Hello,
> 
> I am inputing a 17 x 17 symetric matrix to sammon.  The matrix is a
> co-occurance matrix with no missing data.  If this is at all relevant,
> running hclust on this matrix works.
> 
> > samx <- sammon(q23axproduct)
> 
> I receive the following error:
> 
> Error in sammon(q23axproduct) : initial configuration must be complete
> 
> In addition: Warning messages: 
> 
> 1: some of the first 2 eigenvalues are < 0 in: cmdscale(d, k) 
> 
> 2: NaNs produced in: sqrt(ev) 
> 
> > 
> 
> Any suggestions of what is happening and how to rectify this?
> 
> Thanks
> 
> Gregory L. Blevins 
> 
> The Market Solutions Group
> 
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> 
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-- 
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)
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