I have 2 matrices. Each matrix has a column of time and sensor output at that time. So matrix A has time and sensor output A, and matrix B has time and sensor output B. I want to do a correlation between the two sensors. Unfortunatley, the length of the matrices are slightly different. I try to interpolate the data so that they have a common time vector. However, the correlation of that comes out to be 0. I've read of correlation between two vectors of different lengths. One gets padded with zeros to make them the same size. However, I don't think that will work in my case because it would change the shape of one of the plots. I hope this makes sense. i feel like this would be a common thing but can't seem to find the solution.
Any help would be appreciated.
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