ggbar: Grob function: bars

In hadley/ggplot1: Before there was ggplot2

Grob function: bars

Description

Aesthetic mappings that this grob function understands:

• x:x position (required)

• y:y position (required)

• fill:fill colour (see sccolour)

Usage

ggbar(plot, aesthetics = list(), ..., data = NULL)

Arguments

plot	the plot object to modify
aesthetics	named list of aesthetic mappings, see details for more information
...	other options, see details for more information
data	data source, if not specified the plot default will be used

Details

These can be specified in the plot defaults (see ggplot) or in the aesthetics argument. If you want to modify the position of the points or any axis options, you will need to add a position scale to the plot. These functions start with ps, eg. pscontinuous or pscategorical

Other options:

• avoid: how should overplotting be dealt with? "none" (default) = do nothing, "stack" = stack bars on top of one another, "dodge" = dodge bars from side to side

• sort: Should the values of the bars be sorted

See Also

ggrect

Examples

cyltab <- as.data.frame(table(cyl=mtcars$cyl))
p <- ggplot(cyltab, aes=list(y=Freq, x=cyl))
ggbar(p)
ggbar(p, fill="white", colour="red")
#Can also make a stacked bar chart
p <- ggplot(mtcars, aes=list(y=1, x=factor(cyl)))
ggbar(p, avoid="stack")
ggbar(p, avoid="stack", colour="red") # Made up of multiple small bars
p <- ggplot(mtcars, aes=list(y=mpg, x=factor(cyl)))
ggbar(p, avoid="stack")
ggbar(p, avoid="dodge", sort=TRUE)
ggbar(p, aes=list(fill=mpg), avoid="dodge", sort=TRUE)
ggbar(p, avoid="stack", sort=TRUE)

hadley/ggplot1 documentation built on Dec. 1, 2024, 11:23 a.m.