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Calculate Euclidean Distance of pairs over 3 points?

When you transform your data.frame into a matrix, all values become characters, I don't think that is what you want... (moreover, you're trying to compute distance with the "class" names as one of the variables...)

The best would be to put your "Class" as row.names and then compute your distances and hclust :


Then you can compute the euclidean distances between Class with

dist(mm,method="euclidean") :

> dist(mm,method="euclidean")
          Nigel      Paul     Kelly
Paul  45.110974                    
Kelly  8.602325 45.354162          
Steve 30.016662 75.033326 31.000000

Finally, perform your hierarchical classification :


and plot(hac,hang=-1) to display the dendrogram.

Categories : R

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