ggplot: How to retrieve values for axis labels?
Building on CPak's answer, the structure has changed slightly for ggplot2_3.0.0
. Labels can now be extracted with:
ggplot_build(g)$layout$panel_params[[1]]$y.labels
#[1] "20" "30" "40"
ggplot_build(g)$layout$panel_params[[1]]$x.labels
#[1] "10" "15" "20" "25" "30" "35"
EDIT:
As of ggplot2_3.3.0
the labels are found using:
# check package version
utils::packageVersion("ggplot2")
y_labs <- ggplot_build(g)$layout$panel_params[[1]]$y$get_labels()
y_labs[!is.na(y_labs)]
#[1] "20" "30" "40"
x_labs <- ggplot_build(g)$layout$panel_params[[1]]$x$get_labels()
x_labs[!is.na(x_labs)]
#[1] "10" "15" "20" "25" "30" "35"
Extending on the older post - they can be found with
ggplot_build(g)$layout$panel_ranges[[1]]$y.labels
# "20" "30" "40"
ggplot_build(g)$layout$panel_ranges[[1]]$x.labels
# "10" "15" "20" "25" "30" "35"
EDIT: works with ggplot2_2.2.1
but not ggplot2 version 3.0.0
- thanks to zx8754 and nilambara for pointing this out