stat_summary_bin()'s defaults

[lionel-]

The default geom for stat_summary_bin() is geom_pointrange() and requires y, ymin and ydata aes. I would expect the stat to automatically compute the missing aes, so that the following would work:

g <- ggplot(diamonds, aes(carat, price))
g + stat_summary_bin()
#> Error in seq.default(from = best$lmin, to = best$lmax, by = best$lstep) : 
#>   'from' must be of length 1

Right now we need to explicitly add the fun.data argument:

g + stat_summary_bin(fun.data = mean_se)

The error message could also be improved when some aes are missing.