plot a single Error bars

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评论： dpb 2019-9-16

Hi all,

I am trying to create one error bar but I am struggling a lot.

I tried to read the matlab documentation about error bars but the site is down for some reason.

Anyway, I have calculate the standard deviaiton (s=4.13) but I am confused witht the x,y axes

the x axis should be 1 value and the y axis has a range from 0 to 14

please let me know what you think

many thanks

Nikolas

Adam Danz 2019-9-13

(x,y) are the coordinate you're adding the error bar to.

neg and pos the lower and upper length of the error bar.

so, this line

errorbar(3,4,1,2, 'o')

plots a point at (3,4) and the errorbar extens downward by 1 y-unit and upward by 2 y-units.

Alright, thanks a lot I am gonna have a look at website too!!

Prabhan Purwar 2019-9-16

Hi,

Bar chart can be created by making use of bar and errorbar functions as shown in the following code.

x=1; y=8.35;
sd=4.13;
bar(x,y);
hold on
errorbar(x,y,sd)
ylim([0 14])
xticks([0:2])
hold off

Output:

Please refer the following link for further information on errorbarfunction

Hope this helps

dpb 2019-9-16

Ah! Maybe THAT was what OP mean by "how to get a bar instead of *"...I couldn't figure that one out and there was no further input.

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