ggline {ggplot}R Documentation

Grob function: line

Description

Add a line to the plot

Usage

ggline(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

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>

Examples

mry <- do.call(rbind, by(movies, round(movies$rating), function(df) { 
nums <- tapply(df$length, df$year, length)
data.frame(rating=round(df$rating[1]), year = as.numeric(names(nums)), number=as.vector(nums))
}))
p <- ggplot(mry, aesthetics = list(x=year, y=number, id=rating))
ggline(p)
ggpath(p, list(size=rating))
ggpath(p, list(colour=rating))

[Package ggplot version 0.4.2 Index]