discrete_scale {ggplot2} | R Documentation |
Discrete scale constructor.
discrete_scale(aesthetics, scale_name, palette, name = NULL, breaks = waiver(), labels = waiver(), legend = NULL, limits = NULL, expand = waiver(), na.value = NA, drop = TRUE, guide = "legend")
aesthetics |
the names of the aesthetics that this scale works with |
scale_name |
the name of the 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 |
name |
the name of the scale - used as the axis label or the legend title |
drop |
drop unused factor levels from the scale
( |
breaks |
control the breaks in the guide. There are four possible types of input:
This parameter does not affect in any way how the data is scaled - it only affects the appearance of the legend. |
limits |
A character vector specifying the data range for the scale. and the default order of their display in guides. |
labels |
|
legend |
deprecated. Use |
expand |
a numeric vector of length two, giving a multiplicative and additive constant used to expand the range of the scales so that there is a small gap between the data and the axes. |
na.value |
how should missing values be displayed? |
guide |
the name of, or actual function, used to create the guide. |