| ggpoint {ggplot} | R Documentation |
Add points to a plot
ggpoint(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)
size:size of the point, in mm (see scsize)
shape:shape of the glyph used to draw the point (see scshape)
colour:point colour (see sccolour)
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:
unique:if TRUE, draw at most one point at each unique location
Hadley Wickham <h.wickham@gmail.com>
p <- ggplot(mtcars, aesthetics=list(x=wt, y=mpg)) ggpoint(p) ggpoint(p, list(colour=cyl)) ggpoint(p, list(blahbalh=cyl)) #unknown aesthetics are ignored ggpoint(p, list(shape=cyl)) ggpoint(p, list(shape=cyl, colour=cyl)) ggpoint(p, list(size=mpg)) ggpoint(p, list(size=mpg/wt)) ggpoint(p, list(x=cyl, colour=cyl)) p <- ggplot(mtcars) ggpoint(p, aesthetics=list(x=wt, y=mpg))