Problen with using varsize

Question

Grek Vardugin 2018-11-4

1
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/427893-problen-with-using-varsize

回答： Grek Vardugin 2018-11-12

Hello! I need some problems with using function varsize. This is my code:

lambda = struct('lower', 0, 'upper', 0, 'eqlin', 0, 'ineqlin', 0);  
coder.varsize('lambda.lower', [1,inf]);
coder.varsize('lambda.upper', [1,inf]);
coder.varsize('lambda.eqlin', [1,inf]);
coder.varsize('lambda.ineqlin', [1,inf]);
      [xopt,zmin,exitflag,output2,lambda] = linprog(C1,A,B,[],[],LB1,[],[],options);      
      fprintf(1,Out1,xopt,zmin);
      fprintf(1,'ExitFlag= %d\nIterats= %d\n',exitflag,output2.iterations);
      fprintf(1,'Algorithm - %s\n',output2.algorithm);
      fprintf('Dual problem\n');
      fprintf(1,'y1 = %1.5f\ny2 = %1.5f\ny3 = %1.5f\n', lambda.ineqlin(1),lambda.ineqlin(2), lambda.ineqlin(3));

And I see this error:

MATLAB expression 'lambda.lower' is not of the correct size: expected
[1x1] found [3x1].

I try to compile MEX-function with codegen. What's wrong?

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Answer 1

Grek Vardugin 2018-11-12

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/427893-problen-with-using-varsize#answer_346488

在 MATLAB Online 中打开

My solution.

if isempty(Aeq)
    valueAeq = [];
else
    valueAeq = ones(size(Aeq,1), 1);
end
if isempty(A)
    valueA = [];
else
    valueA = ones(size(A,1), 1);
    string1 = [ '    ',num2str(A(1,1)),'x1)'];
end
lambda = struct('lower', ones(size(C,2),1), 'upper', ones(size(C,2),1), 'eqlin', valueAeq, 'ineqlin', valueA);
[xopt,zmin,exitflag,output2,lambda] = linprog(C,A,B,Aeq,Beq,LB1,[],[],options);