On Apr 5, 2010, at 2:36 PM, Nathaniel Peterson wrote:
> Pierre, Thank you for the wonderful explanation.
> I get it! np.alltrue(idx.data == idx2.data) is False.
>
> PS. Thank you for closing ticket #1447; sorry for the trouble.
No problem whatsoever. Thanks for your patience...
Pierre, Thank you for the wonderful explanation.
I get it! np.alltrue(idx.data == idx2.data) is False.
PS. Thank you for closing ticket #1447; sorry for the trouble.
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On Apr 2, 2010, at 1:08 AM, Nathaniel Peterson wrote:
>
> Is this behavior of masked arrays intended, or is it a bug?
It's not a bug, it's an unfortunate side effect of using boolean masked arrays
for indices. Don't. Instead, you should fill the masked arrays with either True
or False (dependi
Is this behavior of masked arrays intended, or is it a bug?
This part works as I would expected:
import numpy as np
a=np.ma.fix_invalid(np.array([np.nan,-1,0,1]))
b=np.ma.fix_invalid(np.array([np.nan,-1,0,1]))
idx=(a==b)
print(a[idx][3])
# 1.0
Note that a[idx] has shape (4,).
But if I change t
