supplementalProjection function

Supplemental projections.

Performs a supplementary projection across ExPosition (and related) techniques.

supplementalProjection(sup.transform = NULL, f.scores = NULL, Dv = NULL, 
scale.factor = NULL, symmetric = TRUE)

Arguments

• sup.transform: Data already transformed for supplementary projection. That is, the output from: caSupplementalElementsPreProcessing, mdsSupplementalElementsPreProcessing, pcaSupplementaryColsPreProcessing, or pcaSupplementaryRowsPreProcessing.
• f.scores: Active factor scores, e.g., res$ExPosition.Data$fi
• Dv: Active singular values, e.g., res$ExPosition.Data$pdq$Dv
• scale.factor: allows for a scaling factor of supplementary projections. Primarily used for MCA supplemental projections to a correction (e.g., Benzecri).
• symmetric: a boolean. Default is TRUE. If FALSE, factor scores are computed with asymmetric properties (for rows only).

Returns

A list with:

• f.out: Supplementary factor scores.

• d.out: Supplementary square distances.

• r.out: Supplementary cosines.

See Also

It is preferred for users to compute supplemental projections via supplementaryRows and supplementaryCols. These handle some of the nuances and subtleties due to the different methods.

Author(s)

Derek Beaton