Using geom_line with multiple groupings

Question

I have a table as follows:

> testsizes
    size value replicate lane
361   16  6898         1   L1
362   17 10707         1   L1
363   18  1786         1   L1         


        

Answer 1

Based off my comment about interacting the two:

ggplot(testsizes, aes(x = size, y = value,
                      group = interaction(replicate, lane),
                      colour = lane)) +
 geom_line()

Which gives: