control flow graph for mccabe complexity

I'd like to create a control flow graph given the output of the function which checks the cyclomatic complexity of a given MATLAB script (checkcode). However, when I run this function, all that appears to output is a scalar quantity: L 0 (C 0): The McCabe complexity is 3. Is there a way to derive the control flow chart from this single value? Or is there a way to access additional information? Thanks for your help in advance.