[Numpy-discussion] change the mask state of one element in a masked array

Chao YUE chaoyuejoy@gmail....
Sat Feb 18 09:52:27 CST 2012


Dear all,

I built a new empty masked array:

In [91]: a=np.ma.empty((2,5))

In [92]: a
Out[92]:
masked_array(data =
 [[  1.20569155e-312   3.34730819e-316   1.13580079e-316   1.11459945e-316
    9.69610549e-317]
 [  6.94900258e-310   8.48292532e-317   6.94900258e-310   9.76397825e-317
    6.94900258e-310]],
             mask =
 False,
       fill_value = 1e+20)


as you see, the mask for all the elements are false. so how can I set for
some elements to masked elements (mask state as true)?
let's say, I want a[0,0] to be masked.

thanks & cheers,

Chao

-- 
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Chao YUE
Laboratoire des Sciences du Climat et de l'Environnement (LSCE-IPSL)
UMR 1572 CEA-CNRS-UVSQ
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