ggdensity {ggplot} | R Documentation

## Grob function: 1d density

### Description

Display a smooth density estimate.

### Usage

    ggdensity(plot = .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

Aesthetic mappings that this grob function understands:

- `x`:x position (required)
- `weight`: observation weights

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:

- `adjust`: see `density` for details
- `kernel`: kernel used for density estimation, see `density` for details
- other aesthetic properties passed on to `ggline`
- `weight`: observation weights

### Author(s)

Hadley Wickham <h.wickham@gmail.com>

### See Also

`gghistogram`, `density`

### Examples

    m <- ggplot(movies, aesthetics=list(x=rating))
    ggdensity(m)
    qplot(length, data=movies, type="density")
    qplot(length, data=movies, type="density", weight=rating)
    qplot(length, data=movies, type="density", weight=rating/sum(rating))
    qplot(length, data=movies, type="density", log="x")
    qplot(log(length), data=movies, type="density")
    m <- ggplot(movies, Action ~ Comedy, aesthetics=list(x=rating), margins=TRUE)
    ggdensity(m)
    ggdensity(m, scale="freq")
    ggdensity(m, colour="darkgreen", size=5)

[Package ggplot version 0.4.2 Index]