ggplot2 (version 0.9.1)

scale_colour_manual: Create your own discrete scale.

Description

Create your own discrete scale.

Usage

scale_colour_manual(..., values)
  scale_fill_manual(..., values)
  scale_size_manual(..., values)
  scale_shape_manual(..., values)
  scale_linetype_manual(..., values)
  scale_alpha_manual(..., values)
  scale_color_manual(..., values)

Arguments

values

a set of aesthetic values to map data values to. If this is a named vector, then the values will be matched based on the names. If unnamed, values will be matched in order (usually alphabetical, but could be modified with the limits argument to

...

common discrete scale parameters: name, breaks, labels, na.value, limits and guide. See discrete_scale for more de

Examples

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"))
# With rgb hex values
p + scale_colour_manual(values = c("#FF0000", "#0000FF", "#00FF00"))

# 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"))