coefplot.spls {spls}R Documentation

Plot the estimated coefficients of the SPLS object

Description

Plot the 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 )

Arguments

object A fitted SPLS object.
nwin Vector of the numbers of rows and columns in a plotting area. Default is two rows and two columns, i.e. four plots.
xvar Index of the 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.

Details

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

Value

NULL.

Author(s)

Dongjun Chung, Hyonho Chun, and Sunduz Keles.

References

Chun, H. and Keles, S. (2007). "Sparse partial least squares for simultaneous dimension reduction and variable selection", (http://www.stat.wisc.edu/~keles/Papers/SPLS_Nov07.pdf).

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 the estimated coefficient plot of the first four variables
# among the selected predictors
coefplot.spls( f, xvar=c(1:4), nwin=c(2,2) )

[Package spls version 1.0-3 Index]