Get coefficients of variables in constraints (solver-based approach)

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nhavt 2021-7-18

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https://ww2.mathworks.cn/matlabcentral/answers/881218-get-coefficients-of-variables-in-constraints-solver-based-approach

评论： nhavt 2021-7-18

Hi there, I am currently using the Optimization Toolbox to solve a large mixed-integer linear programing problem (ILP). So, I formulated my problem using a problem-based approach. However, the current MATLAB solver "intlinprog" is quite slow for my problem. Therefore, I am switching to CPLEX solver (version 12.10). For this, I need to formulate my problem using a solver-based approach. In particurlar, I am trying to get coefficients of variables in several constraints formulated using optimizationExpression. For example, I have a following constraint,

   x = optimvar('x',[10,1]);
   w = 1:10
   constraint1 = w*x

So, I would like to get the coefficients of variables x in constraint1 (which is w in this simple case). Would it be possible to achieve this? Thanks very much in advance!