position_dodge(2) default is "total"

[alanocallaghan]

This is counter to previous behaviour and (imo) is a worse default. It also contradicts the documentation.

See: https://ggplot2.tidyverse.org/reference/position_dodge.html

According to the docs and previous behaviour, these should be identical:

library("ggplot2")
ggplot(mtcars, aes(factor(cyl), fill = factor(vs))) + 
  geom_bar(position = position_dodge())                                                                                                    

ggplot(mtcars, aes(factor(cyl), fill = factor(vs))) + 
  geom_bar(position = position_dodge(preserve="single"))

^{Created on 2019-05-23 by the reprex package (v0.2.1)}

[karawoo]

I've fixed the example in the documentation. The code examples you provided are working as intended, however. preserve = "total" has always been the default for position_dodge(), which is what you're using above, and we intentionally made it the default for position_dodge2() in #2386.

[alanocallaghan]

Fair dues, you're absolutely right. I was sure I'd used before and seen that behaviour.

[lock]

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