### (discrete).
if (FALSE) {
library("ggplot2")
p <- ggplot(mtcars) +
geom_point(aes(x = wt, y = mpg, shape = factor(gear))) +
facet_wrap(~am) +
theme_bw()
# overlapping symbol palette
p + scale_shape_cleveland()
# non-overlapping symbol palette
p + scale_shape_cleveland(overlap = FALSE)
}
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