@pv wrote on 2011-03-25 I assume you are able to reproduce it also when replacing scipy by numpy in the above code (polyfit comes from Numpy). Where did you get your Numpy binaries? This looks like ...

#this polyfit script is modeled after polyfit-new.py, it takes the new csv file with 30point data vector, and tone attribute for Xu's data #Here we adopt a simpler design, not to use column wise data ...