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


From   Jochen Siegele <jochen.siegele@web.de>
To   statalist@hsphsun2.harvard.edu
Subject   st: use of a distance matrix for cluster analysis in STATA
Date   Mon, 20 Jun 2005 11:01:25 +0200

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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