Become an expert in R — Interactive courses, Cheat Sheets, certificates and more!
Get Started for Free

scale_ptol

Color Scales from Paul Tol's "Colour Schemes

Description

See ptol_pal(). These palettes support up to 12 values.

Usage

scale_colour_ptol(...)

scale_color_ptol(...)

scale_fill_ptol(...)

Arguments

...

Arguments passed on to discrete_scale

palette

A palette function that when called with a single integer argument (the number of levels in the scale) returns the values that they should take (e.g., scales::hue_pal()).

breaks

One of:

  • NULL for no breaks

  • waiver() for the default breaks (the scale limits)

  • A character vector of breaks

  • A function that takes the limits as input and returns breaks as output

limits

One of:

  • NULL to use the default scale values

  • A character vector that defines possible values of the scale and their order

  • A function that accepts the existing (automatic) values and returns new ones

drop

Should unused factor levels be omitted from the scale? The default, TRUE, uses the levels that appear in the data; FALSE uses all the levels in the factor.

na.translate

Unlike continuous scales, discrete scales can easily show missing values, and do so by default. If you want to remove missing values from a discrete scale, specify na.translate = FALSE.

scale_name

The name of the scale that should be used for error messages associated with this scale.

name

The name of the scale. Used as the axis or legend title. If waiver(), the default, the name of the scale is taken from the first mapping used for that aesthetic. If NULL, the legend title will be omitted.

labels

One of:

  • NULL for no labels

  • waiver() for the default labels computed by the transformation object

  • A character vector giving labels (must be same length as breaks)

  • A function that takes the breaks as input and returns labels as output

expand

For position scales, a vector of range expansion constants used to add some padding around the data to ensure that they are placed some distance away from the axes. Use the convenience function expansion() to generate the values for the expand argument. The defaults are to expand the scale by 5% on each side for continuous variables, and by 0.6 units on each side for discrete variables.

guide

A function used to create a guide or its name. See guides() for more information.

position

For position scales, The position of the axis. left or right for y axes, top or bottom for x axes.

super

The super class to use for the constructed scale

See Also

Other colour ptol: ptol_pal()

Examples

library("ggplot2")

p2 <- ggplot(mtcars, aes(x = wt, y = mpg, colour = factor(gear))) +
  geom_point() +
  geom_smooth(method = "lm", se = FALSE) +
  scale_color_ptol("cyl") +
  theme_minimal() +
  ggtitle("Cars")

ggplot(diamonds, aes(x = clarity, fill = cut)) +
  geom_bar() +
  scale_fill_ptol() +
  theme_minimal()
ggthemes

Extra Themes, Scales and Geoms for 'ggplot2'

v4.2.4
GPL-2
Authors
Jeffrey B. Arnold [aut, cre] (<https://orcid.org/0000-0001-9953-3904>), Gergely Daroczi [ctb], Bo Werth [ctb], Brian Weitzner [ctb], Joshua Kunst [ctb], Baptise Auguie [ctb], Bob Rudis [ctb], Hadley Wickham [ctb] (Code from the ggplot2 package.), Justin Talbot [ctb] (Code from the labeling package), Joshua London [ctb]
Initial release

We don't support your browser anymore

Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.