Sushant - have you verified that the error is with the line
x_i_r(results(2,:),1)
For example, if you put a breakpoint at this line and run your code, then the debugger will pause at this line. If you then try to evaluate this line (by copying and pasting it into the Command Window) do you see the Index exceeds matrix dimension error? If so, then the problem is most likely with how results is populated since you are using the contents of this matrix to access data in x_i_r.
