rvcoef {GDAtools}

RV coefficient

Description

Computes the RV coefficient between two groups of numerical variables.

Usage

rvcoef(Xa, Xb, row.w = NULL)

Arguments

Xa

data frame with the first group of numerical variables

Xb

data frame with the second group of numerical variables

row.w

numeric vector of row weights. If NULL (default), a vector of 1 for uniform row weights is used.

Details

Xa and Xb should have the same number of rows.

Value

numerical value : the RV coefficient

Author(s)

Nicolas Robette

References

Escouffier, Y. (1973) Le traitement des variables vectorielles. Biometrics 29 751–760.

See Also

coiPCA, coiMCA, multiMCA

Examples

# RV coefficient between decathlon results by sport
# and Rank and Points
library(FactoMineR)
data(decathlon)
Xa <- decathlon[,1:10]
Xb <- decathlon[,11:12]
str(Xa)
str(Xb)
rvcoef(Xa, Xb)