Re: [Numpy-discussion] Indexing arrays with arrays

[Alan G I. <ai...@am...>]

On Thu, 18 May 2006, Bill Baxter apparently wrote: 
> One thing I haven't quite managed to figure out yet, is 
> what the heck indexing an array with an array is supposed 
> to give you. 

I think you want section 3.3.6.1 of Travis's book,
which is easily one of the hardest sections of the book.

I find it nonobvious that when x and y are nd-arrays
that x[y] should differ from x[tuple(y)] or x[list(y)],
but as explained in this section it does in a big way.

Cheers,
Alan Isaac