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When I run this function, it gives the error "Data 'u_pr' (#427) is inferred as a variable size matrix, while its specified type is something else.". What is the solution for this problem? I will be happy for helps.

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E U
E U 2014-8-14
编辑： Walter Roberson 2020-1-28
function [opt_st, u_pr, y_pr, cv_pr] = fcn( nu, ny, Np)
%#codegen
coder.extrinsic('mpc_ea');
opt_st = zeros(1); u_pr = zeros(nu,Np+1); y_pr = zeros(ny,Np+1); cv_pr =zeros(1);
[opt_st, u_pr, y_pr, cv_pr] = mpc_ea;

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Ryan Livingston
Ryan Livingston 2014-8-18
The variable u_pr is being declared as:
u_pr = zeros(nu,Np+1);
which means that it is variable size since its dimensions depend upon the inputs nu, Np, which are not known until run time.
You need to mark the output signal u_pr as being variable size in the ports and data manager:
http://www.mathworks.com/help/simulink/ug/declare-variable-size-inputs-and-outputs.html
and provide upper bounds for it there.

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