I would like to plot two means with their 95% confidence interval around each mean, plus the mean difference including confidence interval in the same plot but on a second axis on the right starting with 0 on the same level as the smaller mean value of the first two means. I came so far as to make the confidence intervals with the errorbar function but cannot figure out how to set a second axis and adjust it to start at the height of the one mean.
I attached a file with an example of how the plot should look like at the end. Thanks for any help!
plot([0 1 2 3],[0,mean_pre2,mean_post1,0],'bo')
plot([4 5],[mean_diff, 0],'ro')
U = [0,CIpre2_up,CIpost1_up,0,CIdiff_up,0];
L = [0,CIpre2_lo,CIpost1_lo,0,CIdiff_lo,0];