Hi Larry, apologies, for not being clear. Yes, MA is boost::multi_array. M, N, L are the dimensions (this is only a "logical" statement, rather than a proper code snippet). I think I have pretty much sorted out the calling practices wrt multi-aray and looking for if certain functionality exists. My problem amounts to having a view that would allow for the permutation (if not rotation) of axes. As I begun to explain, the operator splitting methods decompose a problem in N dimensions into N 1-dimensional problems. The problem itself is stated, though, in a certain reference system (this means that the discretized operators (stencils) and the boundary conditions are expressed in terms of these boundary conditions. However, the linear equation systems that are produced, are in tridiagonal form, only in one of these steps ( the first step of the 1-D problems ). Otherwise it produces a block-banded system of equations, that can be reduced back to the familiar tridiagonal ( conceptually), through axes permutation (or rotation). If one things in terms of the 2D problem analog, while conceptually it would amount to exchange the two axes, in matrix form, and because of the storage alignment it would involve a much bigger operation. Since, these operators/systems are created from the problem, it would be very nice to have this view functionality to exploit for keeping the storage of the operators in the desired form. I hope this is clearer now - don't mean to drag you into my problem. Thank you for your response, Petros -----Original Message----- From: Larry Evans Sent: Sunday, May 22, 2011 10:43 AM To: boost-users@lists.boost.org Subject: Re: [Boost-users] multi-array and pdes On 05/21/11 15:02, petros wrote: Hi Petros, [snip]
Suppose then that I have a MA( M, N, L ):
Please be more specific. I assume: MA means boost::multi_array however, I've no idea what M, N, and L are. Could you please explain further? -regards, Larry _______________________________________________ Boost-users mailing list Boost-users@lists.boost.org http://lists.boost.org/mailman/listinfo.cgi/boost-users