stat_bin {ggplot2}R Documentation

stat\_bin

Description

Bin data

Usage

stat_bin(mapping = NULL, data = NULL, geom = "bar", position = "stack", 
    width = 0.9, drop = FALSE, right = TRUE, ...)

Arguments

mapping

mapping between variables and aesthetics generated by aes

data

dataset used in this layer, if not specified uses plot dataset

geom

geometric used by this layer

position

position adjustment used by this layer

width

Width of bars when used with categorical data

drop

If TRUE, remove all bins with zero counts

right

Should intervals be closed on the right (a, b], or not [a, b)

...

other arguments

Details

Missing values are currently silently dropped.

This page describes stat\_bin, see layer and qplot for how to create a complete plot from individual components.

Value

A layer

Aesthetics

The following aesthetics can be used with stat\_bin. Aesthetics are mapped to variables in the data with the aes function: stat\_bin(aes(x = var))

Author(s)

Hadley Wickham, http://had.co.nz/

See Also

Examples

## Not run: 
simple <- data.frame(x = rep(1:10, each = 2))
base <- ggplot(simple, aes(x))
# By default, right = TRUE, and intervals are of the form (a, b]
base + stat_bin(binwidth = 1, drop = FALSE, right = TRUE, col = "black")
# If right = FALSE intervals are of the form [a, b)
base + stat_bin(binwidth = 1, drop = FALSE, right = FALSE, col = "black")

m <- ggplot(movies, aes(x=rating))
m + stat_bin()
m + stat_bin(binwidth=0.1)
m + stat_bin(breaks=seq(4,6, by=0.1))
# See geom_histogram for more histogram examples

# To create a unit area histogram, use aes(y = ..density..)
(linehist <- m + stat_bin(aes(y = ..density..), binwidth=0.1,
  geom="line", position="identity"))
linehist + stat_density(colour="blue", fill=NA)

# Also works with categorical variables
ggplot(movies, aes(x=mpaa)) + stat_bin()
qplot(mpaa, data=movies, stat="bin")


## End(Not run)

[Package ggplot2 version 0.8.9 Index]