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

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