plot.factor
Plotting Factor Variables
This functions implements a scatterplot method for
factor arguments of the generic
plot function.
If y is missing barplot is produced.
For numeric y a boxplot is used, and for a factor
y a spineplot is shown. For any other type of
y the next plot method is called, normally
plot.default.
- Keywords
- hplot
Usage
# S3 method for factor
plot(x, y, legend.text = NULL, …)Arguments
- x, y
numeric or factor.
ymay be missing.- legend.text
character vector for annotation of y axis in the case of a factor
y: defaults tolevels(y). This sets theyaxlabelsargument ofspineplot.- …
Further arguments to
barplot,boxplot,spineplotorplotas appropriate. All of these accept graphical parameters (seepar) and annotation arguments passed totitleandaxes = FALSE. None accepttype.
See Also
Examples
library(graphics)
require(grDevices)
<!-- % this does not call plot.factor! -->
<!-- % plot(PlantGrowth) # -> plot.data.frame -->
plot(weight ~ group, data = PlantGrowth) # numeric vector ~ 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
Community examples
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