June 2015
Beginner
348 pages
8h 44m
English
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Fancy indexing
The at() method was added in NumPy 1.8. This method allows fancy indexing in-place. Fancy indexing is indexing that does not involve integers or slices, which is normal indexing. In-place means that the array we operate on will be modified.
The signature for the at() method is ufunc.at(a, indices[, b]). The indices array specifies the elements to operate on. We need the b array only for universal functions with two operands. The following Time for action section gives examples of the at() method.
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.