Automatically assign patterns to a discrete variable

Cycles through the built-in pattern set in a fixed order (hatch, crosshatch, dots, horizontal, vertical, weave, none), assigning each level the next pattern in the cycle.

Usage

scale_pattern_discrete(...)

Arguments

...

Passed to ggplot2::discrete_scale().

Details

Note: assignment is positional against factor levels, not by name. If your variable's values are pattern names (e.g. "hatch", "dots") and you want each level rendered as its own name, use scale_pattern_identity() instead.

Examples

library(ggplot2)
df <- data.frame(g = letters[1:4], v = c(3, 5, 2, 4))
ggplot(df, aes(g, v, fill = g, pattern = g)) +
  geom_col_pattern() +
  scale_pattern_discrete()