Use values without scaling.

Usage

scale_colour_identity(..., guide = "none")

scale_fill_identity(..., guide = "none")

scale_shape_identity(..., guide = "none")

scale_linetype_identity(..., guide = "none")

scale_alpha_identity(..., guide = "none")

scale_size_identity(..., guide = "none")

scale_color_identity(..., guide = "none")

Arguments

...

Other arguments passed on to discrete_scale or continuous_scale

guide

Guide to use for this scale - defaults to "none".

Examples

colour <- c("red", "green", "blue", "yellow")
qplot(1:4, 1:4, fill = colour, geom = "tile")


qplot(1:4, 1:4, fill = colour, geom = "tile") + scale_fill_identity()



# To get a legend guide, specify guide = "legend"
qplot(1:4, 1:4, fill = colour, geom = "tile") +
  scale_fill_identity(guide = "legend")


# But you'll typically also need to supply breaks and labels:
qplot(1:4, 1:4, fill = colour, geom = "tile") +
  scale_fill_identity("trt", labels = letters[1:4], breaks = colour,
  guide = "legend")



# cyl scaled to appropriate size
qplot(mpg, wt, data = mtcars, size = cyl)



# cyl used as point size
qplot(mpg, wt, data = mtcars, size = cyl) + scale_size_identity()