How to insert error bars in interpolation plot?

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!

[Rik]

What have you tried?

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

Answer 1

[Deepak Meena]

Hi Sara,

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

• errorbars
• 1-d Data interpolation

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 

so the interpolated data looks like this:

and the plot with the error bars looks like this

Hope this helps

Thanks

Deepak