[R] Presence Absence of variables in a multivariate data set
gcam032 at gmail.com
Thu Oct 29 02:02:20 CET 2009
I'm sure this is a simple problem, however I need a bit of help to sort it
I have a multivariate data set of elements. Some of the observations have
some amount of certain elements but are lacking in others. Therefore, I
want to quickly group/cluster the observations based on a presence/absence
I have converted the dataset to binary where presence = 1 and absence = 0.
I am toying around with Logistic regression, hclust of the binary data and
even PCA with the binary data. The latter two clearly group the data based
on presence/absence, but I feel there must be a "usual" way to do what I'm
Any advice/help would be greatly appreciated.
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