R: Apply funciton for 2D rectangular bins.

stat_summary2d {ggplot2}

R Documentation

Apply funciton for 2D rectangular bins.

Description

Apply function for 2D rectangular bins.

Usage

stat_summary2d(mapping = NULL, data = NULL, geom = NULL,
  position = "identity", bins = 30, drop = TRUE, fun = mean, ...)

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.
`geom`	The geometric object to use display the data
`position`	The position adjustment to use for overlappling points on this layer
`bins`	see `stat_bin2d`
`drop`	drop if the output of `fun` is `NA`.
`fun`	function for summary.
`...`	parameters passed to `fun`

Aesthetics

stat_summary2d understands the following aesthetics (required aesthetics are in bold):

x
y
z
fill

stat_summary2d is 2D version of stat_summary. The data are devided by x and y. z in each cell is passed to arbitral summary function.

stat_summary2d requires the following aesthetics:

x: horizontal position
y: vertical position
z: value passed to the summary function

Examples


d <- ggplot(diamonds, aes(carat, depth, z = price))
d + stat_summary2d()

# Specifying function
d + stat_summary2d(fun = function(x) sum(x^2))
d + stat_summary2d(fun = var)