how to sparse matrix
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In the example given under Intlinprog (factory, warehouse and sales outlet-matlab documenttation), one of the command to specify the sparse matrix is given as :Aineq = spalloc(P*F + W,matwid,P*F*W + S*W); i would please try to understand how the parameters for rows, and nonzero values have been arrived i.e P*F + W and P*F*W + S*W
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Massimo Zanetti
2016-10-10
编辑：Massimo Zanetti
2016-10-10
According to the lines before alloc() call, https://it.mathworks.com/help/optim/ug/factory-warehouse-sales-allocation-model.html
there are
F = floor(f*N2); % number of factories
W = floor(w*N2); % number of warehouses
S = floor(s*N2); % number of sales outlets
and
P = 20; % 20 products
Therefore, to set up the linear system that defines inquality constraints they first allocate sparse matrix place
Aineq = spalloc(P*F + W,matwid,P*F*W + S*W)
and later they fill in the matrix.
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Sachin Kamble
2016-10-10
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