[eigen] Eigen "views"

["Radu B. Rusu" <rusu@xxxxxxxxxxxxxxxx>]

Hi guys,

We were wondering whether there was ever a discussion about implementing "views" into Eigen. Here's an example:

Eigen::Vector<dynamic, float> vector1, vector2;
vector1 = defineSomeDataSomehow ();
Eigen::Vector<dynamic, int> idx = defineSomeIndicesSomehow ();
vector2 = vector1 (idx);
assert (vector2.size () == idx.size ());


Basically addressing data without copies.

Thanks,
Radu.
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