coord_equal throws off geom_vline and geom_hline intercepts

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Jan 19, 2010, 4:41:03 PM1/19/10

to ggplot2

Adding coord_equal to a plot throws off the intercepts of geom_vline
and geom_hline.

qplot(rnorm(10), rnorm(10))+geom_vline(xintercept = 0, colour = "red")
+geom_hline(yintercept = 0, colour = "red")+coord_equal()

The degree of intercept error varies by how much the coordinates were
adjusted, so repeat that code to get an idea of the range of
deviations.

It also doesn't seem to matter whether coord_equal is added before or
after the geom_vline and geom_hline layers.

qplot(rnorm(10), rnorm(10))+coord_equal()+geom_vline(xintercept = 0,
colour = "red")+geom_hline(yintercept = 0, colour = "red")

Cheers,

Joe

unread,

Jan 20, 2010, 10:05:05 AM1/20/10

to Joe, ggplot2

Hi Joe,

That's fixed in the next version of ggplot2.

Hadley

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