geom_ribbon() now errors when ymin and ymax aesthetics are set rather than mapped #3318
Description
This was identified in the revdep checks (#3303), as it breaks a plot in bayesAB. This error was introduced on purpose (#3235). It's worth noting that the behaviour of layers when all the required aesthetics are set and not mapped is undefined and not consistent between geometries. See #3303 (comment) , #3235 (comment) , and #3303 (comment) .
library(ggplot2)
ggplot() +
geom_ribbon(x = 1:5, ymin = 0, ymax = 1:5, data = data.frame(1:5)) +
geom_blank(aes(x = 1:5, y = 1:5))
#> Error: Either ymin or ymax must be given as an aesthetic.Whereas in 3.1.1:
library(ggplot2)
ggplot() +
geom_ribbon(x = 1:5, ymin = 0, ymax = 1:5, data = data.frame(1:5)) +
geom_blank(aes(x = 1:5, y = 1:5))