ggline {ggplot} | R Documentation |
Add a line to the plot
ggline(plot = .PLOT, aesthetics=list(), ..., data=NULL)
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 |
Aesthetic mappings that this grob function understands:
x
:x position (required)
y
:y position (required)
id
:identifier variable used to break up into multiple paths
size
:size of the line, in mm (see scsize
)
colour
:line colour (see sccolour
)
linetype
:line style/type (see sclinetype
)
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:
Hadley Wickham <h.wickham@gmail.com>
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))