Thank you Pierre,
It
appears the numpy.correlate uses the frequency domain method
for getting the ccf. I would like to know how serious or
exactly what is the issue with normalization?. I have
computed cross correlation using the function and
interpreting the results based on it. It will be helpful if
you could tell me if there is a significant bug in the
function
with best
regards,
Sudheer
np.correlate works in the time domain. I started a discussion about
a month ago about the way it's implemented