
From:  Yoel Callev 
Subject:  Re: matrix with 3 indices 
Date:  Tue, 16 Jul 2002 16:22:26 +0300 
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Yoel Callev wrote:
Apperantly this was a mistake, cells don't work in Octave yet, (or at least not in the MATLAB syntax), but there is a different quick & dirty solution  just use:scherer wrote:Dear Sir I am using OCTAVE as a programming language in a course on computational methos of Physics. At the moment I am teaching molecular dynamics: on a rectangular lattice of cells I need two indices to specify each cell and a third index to enumerate the atoms in the cell. In MATLAB I would simply create a matrix A with elements A(i, j, k), but this feature is apparently not suported by OCTAVE. Is there an alternative? Thanks for your answer. Claudio SchererYou can use cells: A{k}(i,j).This way different cells (k's) can contain matrices of different sizes, and these matrices can still be multiplied.You can allocate such arrays with cell(size), and read about it on the MATLAB help under 'cell arrays', athough I havn't found any reference in Octave's help file, this feature does exists in Octave
eval(sprintf("my_matrix%d(%d,%d)",k,i,j)); and work with matrices named my_matrix1,my_matrix2 etc. Yoel Callev (femto.tau.ac.il/~yoel)  Octave is freely available under the terms of the GNU GPL. Octave's home on the web: http://www.octave.org How to fund new projects: http://www.octave.org/funding.html Subscription information: http://www.octave.org/archive.html 
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