Categorical color scale specification
Usage
color_factor(
expr,
palette = NULL,
domain = NULL,
na_color = "#00000000",
reverse = FALSE
)
Arguments
- expr
A formula selecting a categorical column (e.g. ~region).
- palette
NULL, a palette name, or a vector of colors.
- domain
Optional character vector of levels (controls ordering and which levels are shown).
- na_color
Color used for missing values.
- reverse
Logical; reverse the palette.
Value
A color scale specification object.