how to perform pca on multiple compositions

General
1

I'm trying to perform a principal component analysis using more than one dataset of compositional data. I have two sets of data:

data(expenditure)
data(wellbeing)

Usually to calculate pca on a single composition I use the compositions package:

library(compositions)
#conversion into acomp object
cdata <- acomp(expenditure)
#principal component analysis
pca <- princomp(cdata)
pca

But I can't figure out how to use also thewellbeing compositional data to perform a pca along with expenditure data.

Any idea or suggestions would be appreciated, thanks!

2

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