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en:tbpca_r

Unconstrained ordination

Transformation-based principal component analysis (tb-PCA)

R functions

There is no specialized R function to calculate tb-PCA; the way is to 1) transform the compositional data (using Hellinger or chor transformation), and then 2) apply PCA on them. Transformation can be done using decostand from vegan, and PCA can be calculated by e.g. rda function, also from vegan.

en/tbpca_r.txt · Last modified: 2018/03/28 23:24 by David Zelený