[Numpy-tickets] [NumPy] #369: One-point windows invalid

NumPy numpy-tickets at scipy.net
Mon Oct 30 15:42:38 CST 2006


#369: One-point windows invalid
-----------------------------+----------------------------------------------
 Reporter:  albertstrasheim  |       Owner:  somebody   
     Type:  defect           |      Status:  new        
 Priority:  normal           |   Milestone:  1.0 Release
Component:  numpy.core       |     Version:  devel      
 Severity:  normal           |    Keywords:             
-----------------------------+----------------------------------------------
 The blackman, bartlett, hanning and hamming windows return invalid values
 for 1-point windows, e.g.

 {{{
 In [4]: N.hamming(1)
 Warning: invalid value encountered in divide
 Out[4]: Warning: invalid value encountered in absolute
 array([-1.#IND])
 }}}

 MATLAB returns:
 {{{
 >> hamming(1)
 ans =
      1
 }}}

 Having these functions return valid 1-point windows is useful when writing
 unit tests for other code.

-- 
Ticket URL: <http://projects.scipy.org/scipy/numpy/ticket/369>
NumPy <http://projects.scipy.org/scipy/numpy>
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