# subsets

From car v1.2-2
by John Fox

##### 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.
- 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`

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

##### See Also

##### Examples

```
library(leaps)
subsets(regsubsets(undercount ~ ., data=Ericksen))
```

*Documentation reproduced from package car, version 1.2-2, License: GPL version 2 or newer*

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