[Numpy-tickets] [NumPy] #989: masked_array results differ between inplace and regular operators

NumPy numpy-tickets@scipy....
Mon Jan 26 11:40:10 CST 2009


#989: masked_array results differ between inplace and regular operators
----------------------------+-----------------------------------------------
 Reporter:  danielmcdonald  |        Owner:  pierregm
     Type:  defect          |       Status:  assigned
 Priority:  low             |    Milestone:          
Component:  numpy.ma        |      Version:  1.1.1   
 Severity:  minor           |   Resolution:          
 Keywords:                  |  
----------------------------+-----------------------------------------------
Changes (by pierregm):

  * status:  new => assigned
  * priority:  normal => low
  * severity:  normal => minor

Comment:

 OK, I wouldn't call that a bug but a small defect. In the inplace example,
 the mask is left as it is, while in the second example, it is
 automatically shrunk to `nomask`, a special value equivalent to `False`
 that indicates that no entry is invalid in the array.
 This should not affect your results, but may have a slight impact on
 performances (some operations are bypassed if the mask is `nomask` for
 speed).
 I'll see what I can do. Thanks for reporting!

-- 
Ticket URL: <http://scipy.org/scipy/numpy/ticket/989#comment:1>
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