RVAideMemoire (version 0.9-45-2)

MVA.synt: Synthesis quality of multivariate analyses

Description

Gives a simple estimator of the quality of the (descriptive) synthesis performed by a wide range of multivariate analyses. See 'Details' for a list of analyses covered.

Usage

MVA.synt(x)

Arguments

x

an object of class "dudi.pca", "prcomp", "princomp", "spca", "pcoa", "dudi.pco", "pco", "nmds", "monoMDS", "metaMDS", "

Details

Total variance explained by axes is given for PCA (performed using dudi.pca, prcomp or princomp), sPCA (performed using spca), PCoA (performed using pcoa, dudi.pco or pco), COA (performed using dudi.coa), NSCA (performed using dudi.nsc), MCA (performed using dudi.acm) and mix analysis (performed using dudi.mix or dudi.hillsmith). Intergroup variance explained by axes is given for LDA (performed using lda or discrimin), PLS-DA (performed using plsda) and CDA (performed using discrimin.coa). Global stress is given for NMDS (performed using nmds, monoMDS or metaMDS). In all cases, stress is between 0 and 1. Note to users of cmdscale: result of the wrapper pco is covered by MVA.synt. Note to users of isoMDS: result of the wrapper nmds is covered by MVA.synt.

See Also

dudi.pca, prcomp, princomp, spca, pcoa, dudi.pco, pco, dudi.coa, dudi.nsc, dudi.acm, dudi.mix, dudi.hillsmith, lda, discrimin, plsda, discrimin.coa, nmds, monoMDS, metaMDS