How to calculate error bar in Matlab?

Hi I want to calculate error bar in vertical axis in a Matlab graphic? Could you please help me?

You can find the test file and Matlab code in the attached file. You can plot the graphic via these documents.

[dpb]

WAY too much code and too little background...what do you mean by "calculate [an] error bar in vertical axis"? There's

doc errorbar

that will plot error bars on a graphic given the error value or upper/lower limits desired....what else do you need?