We can't really answer that for you, because we need more information.
If I want to plot x vs. y, we have a clear one-to-one correspondence between each (x,y) pair. MATLAB knows what to plot.
But now suppose
Now, it is not clear how to plot x vs. y. How do we make the correspondence between x and y? We need more information.
Similarly, for your problem, we don't know how to make the correspondence between your 926 values and your 765 values, without more information.