How to modify the following code to incorporate a user selected hub height

Hi,

I'm trying to understand the code given in

http://www.mathworks.com/matlabcentral/fileexchange/43908-example-files-for-programming-with-matlab-webinar/content/WindAnalysisFcn.m

and would like to be able to modify it so it could calculate the wind speed at a given turbine hub height..

Would be great if you could make some suggestions..

Thanks