spls (version 2.3-2)

coefplot.spls: Plot estimated coefficients of the SPLS object

Description

Plot estimated coefficients of the selected predictors in the SPLS object.

Usage

coefplot.spls( object, nwin=c(2,2),
            xvar=c(1:length(object$A)), ylimit=NA )

Value

NULL.

Arguments

object

A fitted SPLS object.

nwin

Vector of the number of rows and columns in a plotting area. Default is two rows and two columns, i.e., four plots.

xvar

Index of variables to be plotted among the set of the selected predictors. Default is to plot the coefficients of all the selected predictors.

ylimit

Range of the y axis (the coefficients) in the plot. If ylimit is not specified, the y axis of the plot has the range between the minimum and the maximum of all coefficient estimates.

Author

Dongjun Chung, Hyonho Chun, and Sunduz Keles.

Details

This plot is useful for visualizing coefficient estimates of a variable for different responses. Hence, the function is applicable only with multivariate response SPLS.

References

Chun H and Keles S (2010), "Sparse partial least squares for simultaneous dimension reduction and variable selection", Journal of the Royal Statistical Society - Series B, Vol. 72, pp. 3--25.

See Also

ci.spls, and correct.spls and plot.spls.

Examples

data(yeast)
# SPLS with eta=0.7 & 8 hidden components
f <- spls( yeast$x, yeast$y, K=8, eta=0.7 )
# Draw estimated coefficient plot of the first four variables
# among the selected predictors
coefplot.spls( f, xvar=c(1:4), nwin=c(2,2) )