Re: st: use of a distance matrix for cluster analysis in STATA

[Jean-Benoit Hardouin <jean-benoit.hardouin@orscentre.org>]

Dear Jochen,
With Stata 8, it is not possible to use a distance matrix in a cluster 
command: you must program your cluster algorithm manually. With Stata 9, 
it is possible to use the clustermat command.
Jean-Benoit

Jochen Siegele a �crit :


> Dear all, thanks a lot for your help and comments. 
> We have a relatively small number of objects, around 20. 
> Hence the raw data matrix is a 1.4 mio x 20 matrix with binary data.
> By an external programme we have calculated a 20x20 distance matrix.
>
> After importing the 20x20 distance matrix into STATA, STATA seems to interpret the imported matrix as raw data matrix and not as a distance matrix.
> Hence STATA seems to calculate a further distance matrix based on the important distance matrix and does not seem be able to accept the imported matrix as a distance matrix. 
> Is there any possibility telling STATA that the imported matrix is a distance matrix and not a raw data matrix? 
> We use STATA 8.1 for our calculations.
>
> Thanks a lot for any help.
>
> Jochen Siegele
>
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