ggrect {ggplot} | R Documentation

## Grob function: rectangle

### Description

Add rectangles to a plot

### Usage

    ggrect(plot = .PLOT, aesthetics=list(), ..., data=plot$data)

### 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

The default arguments will draw a barchart.

Aesthetic mappings that this grob function understands:

- x: x position (required)
- y: y position (required)
- width: width of the rectangle (required)
- height: height of the rectangle (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:

- justification: justification of the bar relative to its (x, y) location, see `rectGrob for more details`
- colour: a character vector describing the line colour

### Author(s)

Hadley Wickham <h.wickham@gmail.com>

### Examples

    p <- ggplot(mtcars, aes=list(y=mpg, x=factor(cyl)))
    ggrect(p)
    ggrect(p, list(fill=mpg))
    pscontinuous(ggrect(p, list(fill=mpg), colour="black"), "y", range=c(0,NA))

[Package ggplot version 0.2.2 Index]