A data transformation according to the isometric logratio transformation is done.
numeric data frame or matrix
The ilr transformation is one possibility to transform compositional data to a real space. Afterwards, the transformed data can be analyzed in the usual way.
Returns the transformed data matrix with one dimension less than X.
Peter Filzmoser <[email protected]>
K. Varmuza and P. Filzmoser: Introduction to Multivariate Statistical Analysis in Chemometrics. CRC Press, Boca Raton, FL, 2009.
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