Add heatmap of 2d bin counts.

Usage

geom_bin2d(mapping = NULL, data = NULL, stat = "bin2d", position = "identity", na.rm = FALSE, show.legend = NA, inherit.aes = TRUE, ...)
stat_bin_2d(mapping = NULL, data = NULL, geom = "tile", position = "identity", bins = 30, binwidth = NULL, drop = TRUE, na.rm = FALSE, show.legend = NA, inherit.aes = TRUE, ...)

Arguments

mapping
Set of aesthetic mappings created by aes or aes_. If specified and inherit.aes = TRUE (the default), is combined with the default mapping at the top level of the plot. You only need to supply mapping if there isn't a mapping defined for the plot.
data
A data frame. If specified, overrides the default data frame defined at the top level of the plot.
position
Position adjustment, either as a string, or the result of a call to a position adjustment function.
na.rm
If FALSE (the default), removes missing values with a warning. If TRUE silently removes missing values.
show.legend
logical. Should this layer be included in the legends? NA, the default, includes if any aesthetics are mapped. FALSE never includes, and TRUE always includes.
inherit.aes
If FALSE, overrides the default aesthetics, rather than combining with them. This is most useful for helper functions that define both data and aesthetics and shouldn't inherit behaviour from the default plot specification, e.g. borders.
...
other arguments passed on to layer. There are three types of arguments you can use here:
  • Aesthetics: to set an aesthetic to a fixed value, like color = "red" or size = 3.
  • Other arguments to the layer, for example you override the default stat associated with the layer.
  • Other arguments passed on to the stat.
geom, stat
Use to override the default connection between geom_bin2d and stat_bin2d.
bins
numeric vector giving number of bins in both vertical and horizontal directions. Set to 30 by default.
binwidth
Numeric vector giving bin width in both vertical and horizontal directions. Overrides bins if both set.
drop
if TRUE removes all cells with 0 counts.

Description

Add heatmap of 2d bin counts.

Aesthetics

stat_bin2d understands the following aesthetics (required aesthetics are in bold):

  • x
  • y
  • fill

Examples

d <- ggplot(diamonds, aes(x, y)) + xlim(4, 10) + ylim(4, 10) d + geom_bin2d()
Warning message: Removed 478 rows containing non-finite values (stat_bin2d).

# You can control the size of the bins by specifying the number of # bins in each direction: d + geom_bin2d(bins = 10)
Warning message: Removed 478 rows containing non-finite values (stat_bin2d). Warning message: Removed 4 rows containing missing values (geom_tile).

d + geom_bin2d(bins = 30)
Warning message: Removed 478 rows containing non-finite values (stat_bin2d).

# Or by specifying the width of the bins d + geom_bin2d(binwidth = c(0.1, 0.1))
Warning message: Removed 478 rows containing non-finite values (stat_bin2d).

See also

stat_binhex for hexagonal binning