Use expression with a variable r

Question

I am trying to label a plot with the following label:

\"Some Assay EC50 (uM)\" where the \"u\" is a micro symbol.

I currently have:

assay &l         


        

Answer 1

Using tidy_eval approach you could do

library(rlang)

assay <- "Some Assay"
plot(0,xlab=expr(paste(!!assay," AC50 (",mu,"M)",sep="")))

expr and !! are included in tidyverse, so you don't actually need to load rlang. I just put it there to be explicit about where they come from.