Re: ND arrays again

[David Bateman]

Brian Blais wrote:

> Hello,
>
> I've been trying to decypher the octave class code for this, but I am 
> having trouble.  Would someone be able to send me a simple example of 
> C++ code to do the following:
>
> pass in a 3 dimensional matrix, and return a 2-dimensional matrix with 
> the value comparable to the octave line:   var(5:15,3:8,3)
>
>
> this would help me a lot!
>
>
>             thanks in advance,
>
>                 Brian Blais

With no testing whatsoever, I believe something like

NDArray m = args(0).array_value();
Array<idx_vector> idx (3);
idx(0) =idx_vector (Range (5., 15.))
idx(1) = idx_vector (Range (3., 8.));
idx(2) = idx_vector (3);
NDArray ret = m.index (idx, 0);

is probably what you want.

D.

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David Bateman                                address@hidden
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