geom_density2d {ggplot2}R Documentation

Contours from a 2d density estimate.

Description

Perform a 2D kernel density estimatation using kde2d and display the results with contours.

Usage

geom_density2d(mapping = NULL, data = NULL, stat = "density2d",
  position = "identity", lineend = "butt", linejoin = "round",
  linemitre = 1, na.rm = FALSE, ...)

Arguments

mapping

The aesthetic mapping, usually constructed with aes or aes_string. Only needs to be set at the layer level if you are overriding the plot defaults.

data

A layer specific dataset - only needed if you want to override the plot defaults.

stat

The statistical transformation to use on the data for this layer.

position

The position adjustment to use for overlapping points on this layer

lineend

Line end style (round, butt, square)

linejoin

Line join style (round, mitre, bevel)

linemitre

Line mitre limit (number greater than 1)

na.rm

If FALSE (the default), removes missing values with a warning. If TRUE silently removes missing values.

...

other arguments passed on to layer. This can include aesthetics whose values you want to set, not map. See layer for more details.

Details

This can be useful for dealing with overplotting.

Aesthetics

geom_density2d understands the following aesthetics (required aesthetics are in bold):

See Also

geom_contour for contour drawing geom, stat_sum for another way of dealing with overplotting

Examples

# See stat_density2d for examples
[Package ggplot2 version 1.0.1 Index]