suppose I have:
In [10]: u
Out[10]:
array([[0, 1, 2, 3, 4],
[5, 6, 7, 8, 9]])
And I have a vector v:
v = np.array ((0,1,0,1,0))
I want to form an output vector which selects items from u where v is the index
of the row of u to be selected.
In the above example, I want:
w = [0,6,2,8,4]
I can't seem to find a syntax that does this.
Now, more importantly, I need the result to be a reference to the original
array
(not a copy), because I'm going to use it on the LHS of an assignment. Is this
possible?
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