Skip picking a scale when the layer data is Inf

[yutannihilation]

Fix #3184

In ggplot2, Inf might mean continuous value or discrete value. But, currently, the plot fails in the following case

• the first layer's data is all Inf
• the second layer's data is discrete

It seems better to skip picking a scale for the layer that has only infinite values. Note that, if all layers are such ones, the plot fails no matter we ignore them or not, because we cannot get a range for plots. So, I think this change is fine.

[clauswilke]

What happens when all layers satisfy this condition?

[yutannihilation]

I was thinking about that... I'm 90% sure it fails anyway, because it doesn't have a range. Am I missing something?

library(ggplot2)
library(patchwork)

p <- ggplot() +
  annotate("rect", xmin = -Inf, xmax = Inf, ymin = -Inf, ymax = Inf, fill = "black")

p / p + xlim(0, 1) + ylim(0, 1)

^{Created on 2019-03-19 by the reprex package (v0.2.1)}

[clauswilke]

I can confirm that it fails for the current ggplot2, so the patch is probably fine.

[lock]

This old issue has been automatically locked. If you believe you have found a related problem, please file a new issue (with reprex) and link to this issue. https://reprex.tidyverse.org/