[Numpy-discussion] help using np.correlate to produce correlograms.

[Jose Guzman]

Dear list,

I'm trying to compute the cross correlation and cross correlograms from 
some signals. For that, I'm testing  first np.correlate with some 
idealized traces (sine waves) that are exactly 1 ms  separated from each 
other. You can have a look here:

http://nbviewer.ipython.org/github/JoseGuzman/myIPythonNotebooks/blob/master/Signal_Processing/Cross%20correlation.ipynb

Unfortunately I am not able to retrieve the correct lag of 1 ms for the 
option 'full'. Strange enough, if I perform an autocorrelation of any of 
the signals,I obtain the correct value for a lags =0 ms. I' think I'm 
doing something wrong to obtain the lags.

I would appreciate If somebody could help me here...

Thanks in advance

Jose
-- 
Jose Guzman
http://www.ist.ac.at/~jguzman/