Comparing sample and reference plots

Hi. I want to compare a sample plot with the reference plot and find out the the probability of matching or a correlation coefficient . How can I do so ?

[KSSV]

What you have?

[ananya mittal]

I have a raman spectra plot and I have to compare it with a reference spectra and find out the correlation betwen them or probablity of matching?

[KSSV]

Read about corr2.

[ananya mittal]

But the two matrixes here doesn't have the same number of datapoints.

Answer 1

[Abhishek Kumar]

Hi Ananya, as I understand you want to find out correlation coefficient between the two plots, and the matrices you have are also not of same size, you can use "interp", you can use the following link:

Comparison of two plots - experimental and model results - MATLAB Answers - MATLAB Central (mathworks.com)

to find out the correlation coefficients you can use the following link for correlation:

https://www.mathworks.com/matlabcentral/answers/346341-correlation-between-two-matrices-with-different-number-of-rows-and-columns