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From: Dr R Summers <sg346@city.ac.uk>
Subject: Re: Salmon mappings and visualisation. 
In-Reply-To: <1994Nov11.111331.118@rmcs.cranfield.ac.uk> 
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Date: Tue, 15 Nov 1994 16:07:37 +0000
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On 11 Nov 1994, Neale A. Hall wrote:

> Hello folks,
> 
> I hope this question is not covered by the FAQ, if it is my appologies but
> I have had a few problems getting an intact copy down loaded.
> 
> 
> Does anybody know what a Salmon plot is... Ok so you do, I know that it is a 
> visualisation tool for Self Org maps etc, but I would like to get enough info
> together so that I can use them.
> 
> Any (polite comments) appreciated.
> 
> 
> Thanks
> 
> Neale Hall
> 
 Sorry it's taken a while to respond, but I think what you mean is 
'Sammon Mapping'! It is a method for visualising multidimensional data 
sets by reducing the number of dimensions to 2 or 3, while still 
retaining an idea of the relationships between points.

 An original article can be found as:

 SAMMON, JW (1969) A Non-linear mapping for data structure analysis. IEEE 
Trans Computers Vol C-18 (5) 401-409.

 I hope this is helpful.
