gggroup: Grob function: groups

Description Usage Arguments Details Examples

View source: R/grobs-complex.r

Description

This grob function provides a general means of creating multiple grobs based on groups in the data. This is useful if you want to fit a separate smoother for each group in the data.

Usage

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gggroup(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

You will need an id variable in your aesthetics list with determines how the data is broken down.

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:

Examples

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p <- ggplot(mtcars, aesthetics=list(y=wt, x=qsec, id=cyl, colour=cyl))
gggroup(p)
gggroup(p, grob="density")
gggroup(p, grob="histogram", aes=list(fill=cyl))
gggroup(ggpoint(p), grob="smooth", se=FALSE, span=1)
gggroup(ggpoint(p), aes=list(id=cyl, size=cyl), grob="smooth", span=1)

hadley/ggplot1 documentation built on Aug. 19, 2019, 2:42 p.m.