UPGMA clustering. Just a wrapper function around hclust.
Usage
upgma(D, method = "average", ...)
Arguments
D
A distance matrix.
method
The agglomeration method to be used. This should be (an unambiguous abbreviation of) one of "ward", "single", "complete", "average", "mcquitty", "median" or "centroid". The default is "average".
...
Further arguments passed to or from other methods.