[Numpy-discussion] Masked array fill_value

Ryan May rmay31@gmail....
Sat Jul 19 15:10:42 CDT 2008


Hi,

I just noticed this and found it surprising:

In [8]: from numpy import ma

In [9]: a = ma.array([1,2,3,4],mask=[False,False,True,False],fill_value=0)

In [10]: a
Out[10]:
masked_array(data = [1 2 -- 4],
       mask = [False False  True False],
       fill_value=0)


In [11]: a[2]
Out[11]:
masked_array(data = --,
       mask = True,
       fill_value=1e+20)

In [12]: np.__version__
Out[12]: '1.1.0'

Is there a reason that the fill_value isn't inherited from the parent array?

Ryan

-- 
Ryan May
Graduate Research Assistant
School of Meteorology
University of Oklahoma


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