R: Plotting Factor Variables (original) (raw)
| plot.factor {graphics} | R Documentation |
|---|
Description
This method is used for[factor](../../base/html/factor.html) arguments of the generic [plot](../../graphics/help/plot.html) function, possibly called from the formula method.
If y is missing a [barplot](../../graphics/help/barplot.html) is produced. For numeric y a [boxplot](../../graphics/help/boxplot.html) is used, and for a factory a [spineplot](../../graphics/help/spineplot.html) is shown. For any other type ofy the next plot method is called, normally[plot.default](../../graphics/help/plot.default.html).
Usage
## S3 method for class 'factor'
plot(x, y, legend.text = NULL, ...)
Arguments
| x, y | numeric or factor. y may be missing. |
|---|---|
| legend.text | character vector for annotation of y axis in the case of a factor y: defaults to levels(y). This sets the yaxlabels argument of spineplot. |
| ... | Further arguments to barplot,boxplot, spineplot orplot as appropriate. All of these acceptgraphical parameters (see par), annotation arguments passed to title, and axes = FALSE. None accept type. |
See Also
[plot.default](../../graphics/help/plot.default.html), [plot.formula](../../graphics/help/plot.formula.html),[barplot](../../graphics/help/barplot.html), [boxplot](../../graphics/help/boxplot.html), [spineplot](../../graphics/help/spineplot.html).
Examples
require(grDevices)
plot(state.region)
## called from the formula method
plot(~ group, data = PlantGrowth)
plot(weight ~ group, data = PlantGrowth) # numeric ~ factor
plot(cut(weight, 2) ~ group, data = PlantGrowth) # factor ~ factor
## passing "..." to spineplot() eventually:
plot(cut(weight, 3) ~ group, data = PlantGrowth,
col = hcl(c(0, 120, 240), 50, 70))
plot(PlantGrowth$group, axes = FALSE, main = "no axes") # extremely silly
[Package _graphics_ version 4.6.0 Index]