得到的数据和掩码值为0？

Question

I have a masked array. I can get back the data via array.data, but this does not filter the data trough the mask.

How can I can get the data, but in the place where there is mask to get zero.

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Here is what I got so far :

 ary.data * (~ary.mask).astype(byte)

Answer 1

use numpy.ma.filled() :

import numpy as np
m = np.ma.masked_greater(np.random.rand(10), 0.5)
print np.ma.filled(m, 0)