ggribbon: Grob function: ribbon

In hadley/ggplot1: Before there was ggplot2

Grob function: ribbon

Description

Aesthetic mappings that this grob function understands:

• x:x position (required)

• upper: position of upper edge of ribbon (required)

• lower: position of lower edge of ribbon (required)

• id:identifier variable used to break up into multiple paths

• colour:line colour (see sccolour)

Usage

ggribbon(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

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:

• none

Examples

library(ggplot2movies)
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))
ggribbon(p, aes=list(upper=number+5, lower=number-5), fill="white", colour=NA)
ggribbon(p, aes=list(y=number, plus=5, minus=-5), fill="white", colour=NA)
ggribbon(p, aes=list(upper=number*1.1, lower=number*0.9), fill="white", colour=NA)
ggribbon(p, aes=list(upper=number+5, lower=number-5), fill="pink")
ggribbon(p, aes=list(upper=number+5, lower=number-5, fill=rating), colour=NA)
scfillgradient(
  ggribbon(p, aes=list(upper=number+5, lower=number-5, fill=rating), colour=NA),
  midpoint=5, low="red", high="darkgreen"
)

hadley/ggplot1 documentation built on Dec. 1, 2024, 11:23 a.m.