Hello,
This is my first e-mail, I will try to make the idea simple.
Similar to masked array it would be interesting to use a label array to
guide operations.
Ex.:
>>> x
labelled_array(data =
[[0 1 2]
[3 4 5]
[6 7 8]],
label =
[[0 1 2]
[0 1 2]
[0 1 2]])
>>> sum(x)
array([9, 12, 15])
The operations would create a new axis for label indexing.
You could think of it as a collection of masks, one for each label.
I don't know a way to make something like this efficiently without a loop.
Just wondering...
Sérgio.
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