How to insert error bars in interpolation plot?

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Sara Filippini 2020-11-16

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回答： Deepak Meena 2020-11-20

My plot is a linear interpolation of N scatter points. I'm trying to mark those points as bar errors, and tune the length of the bar errors according to the y axis.

For example: I have a linear interpolation of the gain of an amplifier, I know that the average noise is 100 mV, I want to have a 100 mV bar for each scatter point.

Thank you everyone!

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Rik 2020-11-16

What have you tried?

Have a read here and here. It will greatly improve your chances of getting an answer.

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Answer 1

Deepak Meena 2020-11-20

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在 MATLAB Online 中打开

Hi Sara,

you can refer to the following documentation to plot error bars in interpolated plots:

Following example illustrate how you can use the above functions :

x = 0:pi/4:2*pi; 
v = sin(x);
xq = 0:pi/16:2*pi;
err = 0.5*ones(size(v));
figure
vq1 = interp1(x,v,xq);
plot(x,v,'o',xq,vq1,':.');%%interpolated data 
hold on
errorbar(x,v,err);%putting error bars on the original points 