character. One of "s2color",
"s1rcolor", "s1color", or "mono".
Arguments passed on to discrete_scale
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()).
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
NULL to use the default scale values
A character vector that defines possible values of the scale and their
A function that accepts the existing (automatic) values and returns
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.
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.
The name of the scale that should be used for error messages
associated with this scale.
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
NULL for no labels
waiver() for the default labels computed by the
A character vector giving labels (must be same length as breaks)
A function that takes the breaks as input and returns labels
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.
A function used to create a guide or its name. See
guides() for more information.
For position scales, The position of the axis.
left or right for y axes, top or bottom for x axes.