| scale_manual {ggplot2} | R Documentation |
Create your own discrete scale
scale_colour_manual(name=NULL, values=NULL, limits=NULL, breaks=NULL, labels=NULL, formatter=identity, ...) scale_fill_manual(name=NULL, values=NULL, limits=NULL, breaks=NULL, labels=NULL, formatter=identity, ...) scale_size_manual(name=NULL, values=NULL, limits=NULL, breaks=NULL, labels=NULL, formatter=identity, ...) scale_shape_manual(name=NULL, values=NULL, limits=NULL, breaks=NULL, labels=NULL, formatter=identity, ...) scale_linetype_manual(name=NULL, values=NULL, limits=NULL, breaks=NULL, labels=NULL, formatter=identity, ...)
name |
name of scale to appear in legend or on axis. Maybe be an expression: see ?plotmath |
values |
NULL |
limits |
numeric vector of length 2, giving the extent of the scale |
breaks |
numeric vector indicating where breaks should lie |
labels |
character vector giving labels associated with breaks |
formatter |
NULL |
... |
ignored |
This page describes scale_manual, see layer and qplot for how to create a complete plot from individual components.
A layer
Hadley Wickham, http://had.co.nz/
## Not run:
p <- qplot(mpg, wt, data = mtcars, colour = factor(cyl))
p + scale_colour_manual(values = c("red","blue", "green"))
p + scale_colour_manual(
values = c("8" = "red","4" = "blue","6" = "green"))
# As with other scales you can use breaks to control the appearance
# of the legend
cols <- c("8" = "red","4" = "blue","6" = "darkgreen", "10" = "orange")
p + scale_colour_manual(values = cols)
p + scale_colour_manual(values = cols, breaks = c("4", "6", "8"))
p + scale_colour_manual(values = cols, breaks = c("8", "6", "4"))
p + scale_colour_manual(values = cols, breaks = c("4", "6", "8"),
labels = c("four", "six", "eight"))
# And limits to control the possible values of the scale
p + scale_colour_manual(values = cols, limits = c("4", "8"))
p + scale_colour_manual(values = cols, limits = c("4", "6", "8", "10"))
## End(Not run)