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Armadillo - delete rows in a cube

I'm using Armadillo C++ library for matrices.

I have a 3d matrix (Cube) of size [73 256 1000].

I would like to take only part of the rows of the cube, e.g. in matlab

A = A(3:66, :, :);

How can I do it with Armadillo? I haven't found anything in the API.

Thanks.

Solution

  • The functionality is listed in Armadillo's documentation, in the subcube views section. You can use span::all to indicate an entire range. to For example:

    cube A(100,50,10);
A.randu();

A = A(span(3,66), span::all, span::all);