Hello everybody,
I am trying to insert error bars in my mirror bar plot in R (ggplot).
I have different pairs of stimuli (control VS treatment) and I am representing the number of insects that made the choice on the x axes, and on the y axes I have different pair of treatments.
What I cannot do it is inserting the error bars: for the treatment, the bars are located correctly but for the control they are shifted on the other side.
Thank you in advance!
Cheers,
Nicoletta