How to compare two different size wave shape?

Hi all, Firstly I apologize that I am too week in matlab. I have stuck to compare two different size wave shape. I have to value, a=[1 3 6 4 7 0] and b=[0 1 2 4 7 4 3 1] which are different in size. When I plot them they are different in shape. Now I want a value "c" which will show me the percentage of difference between those wave shape.

[Geoff Hayes]

Zubair - how are you plotting these two arrays? Is the c value (scalar?) supposed to give you a percentage difference in area or something else? Please clarify the problem that you are trying to solve.

[Walter Roberson]

Are they intended to represent the same time period with different sampling rates?

Answer 1

[Zubair Ahsan]

Actually I have a ECG signal, I have already cut it in each segment (in figure: as p1 to p2 or p2 to p3). Each segment length are different. Now I want to compare those segmented signal. Is it possible?

Answer 2

[Walter Roberson]

You can compare in at least some respects. For example you could fft() the segments to the same number of target points and then make some comparisons of the frequency characteristics. Or if you can identify common features then you could compare which fraction of the way through they occur.