How to find the error between 2 curve ?

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Jenifer NG
Jenifer NG on 17 Jun 2022
Answered: Karim on 17 Jun 2022
Dear All,
I want to find the error between 2 curves as bellow.
The red curve is standard value 100% accuracy, while the green curve is noise value. I want to find the error between red and blue curve
Could anyone help me ?
Here is the code to plot 2 curve:
load matlab.mat
plot(x,table_A.Line1,'r', x,table_A.Line2,'g',LineWidth=2)
legend

Accepted Answer

Karim
Karim on 17 Jun 2022
Hey,
It depends on how you define the error. If you mean the difference between the two you can simply do the following:
load('matlab.mat')
MyDiff = table_A.Line2 - table_A.Line1;
figure
subplot(2,1,1)
plot(x,table_A.Line1,'r', x,table_A.Line2,'g','LineWidth',1.5)
grid on
legend('correct','with noise')
subplot(2,1,2)
plot(x,MyDiff,'LineWidth',1.5)
grid on
ylabel('error')
xlabel('data point')

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