Adding text for individual plots in ggplot facet_wrap

tidyverse
2

Here is a working example of putting different text in each facet. I think the key difference to your example is that I assign DF2 (the equivalent of your counts data frame) to the data argument of geom_text().

library(ggplot2)
#> Warning: package 'ggplot2' was built under R version 4.3.3
DF1 <- data.frame(X = rep(c(1,2), 4), Y = c(1,2, 1.1,2.1,1.2,2.2,1.3,2.3),
                  tissue = c("D","D","I","I","L","L","M","M"))
DF2 <- data.frame(tissue = c("D","I","L","M"), Lab = c("W","X","Y","Z"))

ggplot(DF1, aes(x = X, y = Y, group = tissue)) + geom_point() +
  geom_text(aes(x = 1.5, y = 1.5, label = Lab), data = DF2) +
  facet_wrap(~tissue)

Created on 2024-07-31 with reprex v2.0.2

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