ggerrorbar {ggplot}R Documentation

Grob function: error bars

Description

Add error bars to a plot

Usage

ggerrorbar(plot = .PLOT, aesthetics = list(), ..., data = NULL)

Arguments

plot the plot object to modify
aesthetics named list of aesthetic mappings, see details for more information
... other options, see details for more information
data data source, if not specified the plot default will be used

Details

The error bar grob adds error bars to a plot. Thanks to Timm Danker for supplying some initial code and the motivation to include it in ggplot.

Aesthetic mappings that this grob function understands:

These can be specified in the plot defaults (see ggplot) or in the aesthetics argument. If you want to modify the position of the points or any axis options, you will need to add a position scale to the plot. These functions start with ps, eg. pscontinuous or pscategorical

Other options:

Author(s)

Hadley Wickham <h.wickham@gmail.com>

See Also

ggbar

Examples

df <- data.frame(x = factor(c(1, 1, 2, 2)), y = c(1, 5, 3, 4), g = c(1, 2, 1, 2), bar = c(0.1, 
0.3, 0.3, 0.2))
df2<-df[c(1,3),];df2

p <- ggbar(ggplot(data=df, aes=list(fill=g, y=y, x=x)))
ggerrorbar(p, aes=list(plus=bar))
qplot(x,y,df,types=list("bar","errorbar"), avoid="dodge",aes=list(fill=g,plus=bar))
qplot(x,y,df,types=list("bar","errorbar"), avoid="dodge",aes=list(fill=g,plus=bar, minus=-2*bar))
qplot(x,y,df2,types=list("point","errorbar"), aes=list(plus=bar), width=0.1)
qplot(x,y,df2,types=list("bar","line","point","errorbar"), aes=list(fill=g,plus=bar,barcolour=g))
qplot(x,y,df2,types=list("jitter","errorbar"), aes=list(plus=bar))
qplot(x,y,df,types=list("point","line","errorbar"), aes=list(plus=bar,id=g), width=0.1)

[Package ggplot version 0.4.2 Index]