subsets {car}R Documentation

Plot Output from regsubsets Function in leaps package

Description

The regsubsets function in the leaps package finds optimal subsets of predictors. This function plots a measure of fit (see the statistic argument below) against subset size).

Usage

subsets(object, ...)

## S3 method for class 'regsubsets':
subsets(object, 
    names=abbreviate(object$xnames, minlength = abbrev), 
    abbrev=1, min.size=1, max.size=length(names), legend, 
    statistic=c("bic", "cp", "adjr2", "rsq", "rss"), 
    las=par('las'), cex.subsets=1, ...)

Arguments

object a regsubsets object produced by the regsubsets function in the leaps package.
names a vector of (short) names for the predictors, excluding the regression intercept, if one is present; if missing, these are derived from the predictor names in object.
abbrev minimum number of characters to use in abbreviating predictor names.
min.size minimum size subset to plot; default is 1.
max.size maximum size subset to plot; default is number of predictors.
legend TRUE to plot a legend of predictor names; defaults to TRUE if abbreviations are computed for predictor names. The legend is placed on the plot interactively with the mouse.
statistic statistic to plot for each predictor subset; one of: "bic", Bayes Information Criterion; "cp", Mallows's Cp; "adjr2", R^2 adjusted for degrees of freedom; "rsq", unadjusted R^2; "rss", residual sum of squares.
las if 0, ticks labels are drawn parallel to the axis; set to 1 for horizontal labels (see par).
cex.subsets can be used to change the relative size of the characters used to plot the regression subsets; default is 1.
... arguments to be passed down to subsets.regsubsets and plot.

Value

NULL. This function is used for its side effect – to create a plot.

Author(s)

John Fox

See Also

regsubsets

Examples

    ## Not run: 
library(leaps)
subsets(regsubsets(undercount ~ ., data=Ericksen))
    
## End(Not run)

[Package car version 1.1-0 Index]