I need to write some text at my shared labels.
I have 4 subplots in my plot and they share the same label axis, so I would like to put some annotation at the Y label (and X label too, but the x label I manage excluding the x labels from all plots except from the last one).
I've tried the annotate function but nothing seems to change.
a <- ggarrange(pet, a63, a64, a65,
labels = c(" Polietileno Tereftalato (PET)", "Amostra 63",
"Amostra 64", "Amostra 65"),
ncol = 1, nrow = 4, label.x=0.18, label.y= 1, align ="v",
vjust=2, hjust=0.2,
legend = "bottom")
a + annotate("text", x = 0, y = 25, label ="Absorbância")
a
