subsets

0th

Percentile

Plot Output from regsubsets Function in leaps package

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.

Keywords
hplot, regression
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. By expanding the left or right plot margin, yo
statistic
statistic to plot for each predictor subset; one of: "bic", Bayes Information Criterion; "cp", Mallows's $C_{p}$; "adjr2", $R^{2}$ adjusted for degrees of freedom; "rsq", unadjusted
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 if the legend is TRUE; otherwise a data frame with the legend.

References

Fox, J. (2008) Applied Regression Analysis and Generalized Linear Models, Second Edition. Sage. Fox, J. and Weisberg, S. (2011) An R Companion to Applied Regression, Second Edition, Sage.

See Also

regsubsets

Aliases
  • subsets
  • subsets.regsubsets
Examples
if (interactive() && require(leaps)){
	subsets(regsubsets(undercount ~ ., data=Ericksen))
}
Documentation reproduced from package car, version 2.0-11, License: GPL (>= 2)

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