geom_linerange {ggplot2}R Documentation

geom_linerange

Description

An interval represented by a vertical line

Usage

geom_linerange(mapping=NULL, data=NULL, stat="identity", position="identity", ...)

Arguments

mapping mapping between variables and aesthetics generated by aes
data dataset used in this layer, if not specified uses plot dataset
stat statistic used by this layer
position position adjustment used by this layer
... ignored

Details

This page describes geom_linerange, 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 geom_linerange. Aesthetics are mapped to variables in the data with the aes function: geom\_linerange(\code{aes}(x = var))

Author(s)

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

See Also

Examples

## Not run: 
# Generate data: means and standard errors of means for prices
# for each type of cut
dmod <- lm(price ~ cut, data=diamonds)
cuts <- data.frame(cut=unique(diamonds$cut), predict(dmod, data.frame(cut = unique(diamonds$cut)), se=T)[c("fit","se.fit")])

qplot(cut, fit, data=cuts)
# With a bar chart, we are comparing lengths, so the y-axis is 
# automatically extended to include 0
qplot(cut, fit, data=cuts, geom="bar")

# Display estimates and standard errors in various ways
se <- ggplot(cuts, aes(x = cut, ymin=fit - se.fit, ymax=fit + se.fit, y=fit))
se + geom_linerange()
se + geom_pointrange()
se + geom_errorbar(width = 0.5)
se + geom_crossbar(width = 0.5)

# Use coord_flip to flip the x and y axes
se + geom_linerange() + coord_flip()
## End(Not run)

[Package ggplot2 version 0.8.2 Index]