Hi all,
I'm new to PCA in R, so this might be a basical thing, but I cannot find
anything on the net about it.
I need to make a PCA plot with two response variables (df$resp1 and df$resp2)
against eight metabolites (df$met1, df$met2, ...) and I don't have a clue how
to do... and I've only used the simplest PCAs before, like this:
pcaObj=prcomp(t(df[idx, c(40:47)]))
biplot(pcaObj)
Anyone who knows how to do?
Best rageds,
Joel
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