Missing p-value with multiple comparisons

[Albluca]

Hi there,

first of all, thank you for your package. It's very helpful! I'm using the package to display the result of multiple tests and some p-vals are not plotted

This is an example with synthetic data:

library(ggplot2)
library(ggsignif)

ggplot(data.frame(y=runif(100), x=sample(c("A", "B", "C", "D"), size = 100, replace = TRUE)), aes(x = x, y=y)) +
geom_boxplot() + geom_signif(comparisons = list(c(1,2), c(2,3), c(1,3), c(1,4), c(2,4)), step_increase = .1)

and this is the result:

I tried playing around with the "step_increase", but it did not helped ... Any idea on how to fix it? Thanks!

Best wishes,
Luca

[ACMGlueck]

Hi Luca,

As it happens, I faced the same issue. My solution was to make separate geom_signif() layers for the various comparisons as in here:

ggplot(data.frame(y=runif(100), x=sample(c("A", "B", "C", "D"), size = 100, replace = TRUE)), aes(x = x, y=y)) + geom_boxplot() + geom_signif(comparisons = list(c(1,2)), y_position=1.0) + geom_signif(comparisons = list(c(2,3)), y_position=1.1) + geom_signif(comparisons = list(c(1,3)), y_position=1.2) + geom_signif(comparisons = list(c(1,4)), y_position=1.3) + geom_signif(comparisons = list(c(2,4)), y_position=1.4)

You may be able to combine some of your comparisons in one layer and in this manner to reduce the number of layers, but the basic solution remains the same: separate layers for those values that don't show up.

I hope this helps,

Anton

[const-ae]

Hi Albluca,

thanks for raising the issue, this was indeed a bug. The internal grouping of the data was erroneous if multiple brackets referenced the same group.

I have fixed the bug and uploaded a new version to github which you can install like this:

devtools::install_github("Artjom-Metro/ggsignif")

[Albluca]

Thank you both for your replay! I updated the package and indeed it works brilliantly.

BW,
Luca