How to draw an "error bar" between two points on a scatter plot

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Zachary Ferrie 2019-8-23

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评论： Zachary Ferrie 2019-8-26

Hi All,

I am plotting gps corrdinates on an x/y scatter plot. Based on some statistics I ran, the gps corrdinates could be slighty off resulting in the posibility of the current gps location being slighty ahead or behind the estimated location.

I would like to show this error on the scatter plot by plotting an "error bar" of sorts.

My question is:

How would I go about plotting a line between points (x1, y1) and (x2, y2) that looks like an error bar?

Thanks,

Zach

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Star Strider 2019-8-26

Zachary Ferrie commented:

I really want to plot a line between two points that has the look of an error bar. I don't need any of the errorbar() fuctionality because I know what points I want to plot my line between. I really just want to be able to draw a line between any two points that I specify that looks like an error bar. I have drawn a picture that hopefully helps make things more clear.

Thanks,

Zach

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Answer 1

the cyclist 2019-8-26

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https://ww2.mathworks.cn/matlabcentral/answers/477378-how-to-draw-an-error-bar-between-two-points-on-a-scatter-plot#answer_389152

I think you might be able to get something pretty close to what you want using the doublearrow annotation. (There is a property governing what the arrowheads look like; I don't think any are a truly flat end like an errorbar, but maybe you don't care.)

Failing that, you could build it completely from scratch using the line primitive.