`axis.line.x` and `axis.line.y` work, but not `axis.line`

[johnbaums]

In 2.1.0, axis.line.x and axis.line.y work, but axis.line does not.

For example,

This works:

ggplot(mtcars, aes(wt, mpg)) +
  geom_point() +
  theme(axis.line.x=element_line(),
        axis.line.y=element_line())

But this doesn't:

ggplot(mtcars, aes(wt, mpg)) +
  geom_point() +
  theme(axis.line=element_line())

(The example at http://docs.ggplot2.org/current/theme.html - i.e., m + theme(axis.line = element_line(size = 3, colour = "red", linetype = "dotted")) - also fails)

[amoeba]

If it helps, I can confirm that I am seeing this behavior as well.

Using ggplot2 * 2.1.0 2016-03-01 CRAN (R 3.2.3) Mac OS 10.11.3. Seems like this could be related to #778.

[nathaneastwood]

I believe this is also an issue with panel.grid, as this will work for panel.grid.major and panel.grid.minor but not with panel.grid.

[GrosPhoton]

The same problem seems to happen with line

[Katiedaisey]

@johnbaums @nattye @GrosPhoton This has been solved in pull request #1581 that has unfortunately not been integrated into the recent ggplot2 update. You can access it there or directly from my branch of ggplot2.