nicolash2 / ggbrace Goto Github PK

Hello! I combine ggbrace with the latex2exp package to have some Latex in the geom_brace label. This works just fine despite the fact that geom_brace says it ignores the parameter parse=TRUE (which it doesn't because when parse=FALSE the Latex does not render). Seems like that the warning message is misplaced.

Example:

library(ggbrace)
library(ggplot2)
library(latex2exp)

ggplot(mtcars, aes(mpg,drat)) + 
geom_point() + 
geom_brace(aes(
	x=c(1,2), 
	y=c(1,2), 
	label=TeX("$\\beta$", output = "character")), 
   	labelsize=10, 
	inherit.data=FALSE, 
    parse=TRUE)

Warning message:
In geom_brace(aes(x = c(1, 2), y = c(1, 2), label = TeX("$\\beta$",  :
  Ignoring unknown parameters: `parse`

Hi @solatar

Thanks for the package! I encounter errors when trying to use it on slightly complex plots with fill/color options. For example:

test = ggplot(mtcars, aes(cyl, mpg, fill = factor(vs))) + geom_bar(stat='identity', position = 'dodge')
test + geom_brace(ystart=-5, pointing="side")
Error in factor(vs) : object 'vs' not found

Any ideas to work around this?

Best,
Shujun

This seems like it ought to work but doesn't, presumably because xstart and xend are datetimes:

> df
# A tibble: 3 x 3
  status    xstart              xend               
  <fct>     <dttm>              <dttm>             
1 projected 2021-05-03 00:00:00 2021-07-26 00:00:00
2 scheduled 2021-04-05 00:00:00 2021-05-02 23:59:59
3 made      2021-01-08 00:00:00 2021-04-04 23:59:59

> geom_brace(
+     data = df,
+     inherit.aes=FALSE,
+     aes(xstart=xstart, xend=xend, label=status), ystart=0, yend=10
+   )
Error in xend - xstart : non-numeric argument to binary operator

I would love to be able to produce braces underneath the axes similar to this: https://rdrr.io/cran/lemon/man/brackets.html

Is this possible?