shapes (version 1.2.7)

shapes.cva: Canonical variate analysis for shapes

Description

Carry out canonical variate analysis for shapes (in two or more groups)

Usage

shapes.cva(X,groups,scale=TRUE,tangentcoords = "residual",ncv=2)

Value

A plot if ncv=2 or 3 and the Canonical Variate Scores

Arguments

X

Input k x m x n real array of the configurations, where k is the number of points, m is the number of dimensions, and n is the sample size.

groups

The group labels

scale

Logical, indicating if Procrustes scaling should be carried out

tangentcoords

The type of Procrustes tangent coordinates to use (as for procGPA)

ncv

Number of canonical variates to display

Author

Ian Dryden

References

Dryden, I.L. and Mardia, K.V. (2016). Statistical Shape Analysis, with Applications in R (Second Edition). Wiley, Chichester.

See Also

procGPA

Examples

#2D example : female and male apes   (cf. Dryden and Mardia, 2016)

data(pongof.dat)
data(pongom.dat) 
data(panm.dat)
data(panf.dat)

apes   <- groupstack( pongof.dat , pongom.dat , panm.dat, panf.dat )

shapes.cva( apes$x, apes$groups)