ggbar {ggplot} | R Documentation |
Add bars to a plot
ggbar(plot = .PLOT, aesthetics=list(), ..., data=NULL)
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 |
The bar grob produces bars from the y-position to the y=0.
Aesthetic mappings that this grob function understands:
x
:x position (required)
y
:y position (required)
fill
:fill colour (see sccolour)
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
Hadley Wickham <h.wickham@gmail.com>
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)