CODEWITHSUNDEEP
rggplot2plotdata-visualization
zad
zad

Reputation: 93

Having two y-axes transformation in ggplot2

I know that it's generally looked down upon to have two y-axes for several reasons, but there is a very specific reason for having it here as the two are basically the same concepts and need to be plotted side by side.

Anyway, what I'm hoping to do here is have something similar to 

scale_y_reverse(breaks=seq(0,1,.05),
                   sec.axis = sec_axis(~ 1-., name = "SecondAxis", breaks=seq(0,1,.05) ))

Unfortunately, this doesn't seem to work. I need the primary axis to go from 1 to zero as it goes up, and the second y axis to go from 0 to 1 as it goes up. enter image description here

Doesn't seem to work unfortunately from the code I have above as you can see above, which was proposed as a solution in another thread.

Upvotes: 2

Views: 302

Answers (1)

Maurits Evers
Maurits Evers

Reputation: 50678

I can't reproduce your issue.

Update: This seems to be an issue (bug) specific to ggplot2_3.1.0. There exist a couple of issues on GitHub related to unexpected behaviour of sec_axis in 3.1.0: sec_axis formula behaviour #2974, Ticks misaligned for sec_axis with some scale transformations and data in 3.1.0 #2978.

The following example is reproducible in ggplot2_3.0.0 but fails in ggplot2_3.1.0.

Here is a minimal & reproducible example, could you please double-check that this works for you.

# Generate sample data
x <- seq(1, 4 * pi, length.out = 100)
y <- sin(x)^2

library(ggplot2)
ggplot(data.frame(x, y), aes(x, y)) +
    geom_point() +
    scale_y_reverse(
        breaks = seq(0, 1, 0.1),
        sec.axis = sec_axis(~ 1 - ., name = "SecondAxis", breaks = seq(0, 1, 0.1)))

enter image description here

Upvotes: 1

Related Questions