R ggplot2: using stat_summary (mean) and logarithmic scale

Question

I have a bunch of measurements over time and I want to plot them in R. Here is a sample of my data. I\'ve got 6 measurements for each of 4 time points:

value         


        

Answer 1

A work around to solve it, if you don´t want to use coord_trans() and still want to transform the data, is to create a function which will back transform it:

f1 <- function(x) {
  log10(mean(10 ^ x)) 
}

stat_summary (fun.y = f1, geom="line", mapping = aes (group = 1))