[Scipy-tickets] [SciPy] #1706: Error in Cookbook "Savitzky Golay"

SciPy Trac scipy-tickets@scipy....
Sat Aug 11 16:10:00 CDT 2012


#1706: Error in Cookbook "Savitzky Golay"
-------------------------------------+--------------------------------------
 Reporter:  thomas.haslwanter        |       Owner:  pv         
     Type:  defect                   |      Status:  new        
 Priority:  normal                   |   Milestone:  Unscheduled
Component:  Documentation            |     Version:  0.10.0     
 Keywords:  Cookbook Savitzky-Golay  |  
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Comment(by thomas.haslwanter):

 Warren, watch out: in your calculation, you leave out the factorial, as
 well as the rate**deriv. With your coefficients, you cannot just filter
 the data (e.g. to get velocity or acceleration), but need additional
 coefficients. See e.g. my code above.

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Ticket URL: <http://projects.scipy.org/scipy/ticket/1706#comment:4>
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