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What happened to the errorbar function in R2014b?

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Daniel Shub
Daniel Shub 2015-2-6
关闭： MATLAB Answer Bot 2021-8-20
As far as I can tell both the ERRORBAR function and its documentation are identical in R2014a and R2014b. The beahviour, however, is drastically different. Consider:
errorbar(1:5, ones(1, 5), -2:2, zeros(1, 5))
In R2014a you get
while in R2014b you get
Both errorbars have length L(i)+U(i) like the documentation says and I am not sure what a negative distance below a point means, but I wasn't expecting the change. Did TMW tell us about this? Is this a bug or a bug fix? Is it documented?

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Scott Webster
Scott Webster 2015-2-6
It looks like maybe this was a bug before, and that now it has been fixed in R2014b? If a negative error bar is drawn in the opposite direction then the new behaviour seems correct. I could see an argument for not allowing negative values, but taking the absolute value as seems to have been the previous method could mask errors in code?

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