The function is built over PLOTYYY in order to create 3 Y axes and having errorbars for the curves.
It's has the exact abilities of PLOTYYY with extra features for errorbars.
The zip file include two files: plotyyyerrxy.m and orxy.m.
plotyyyerrxy is using the 2nd file to create the errorbars.
Or Werner (2019). plotyyyerrxy (https://www.mathworks.com/matlabcentral/fileexchange/55319-plotyyyerrxy), MATLAB Central File Exchange. Retrieved .