Syntax in sysic: Can an array be assigned as an argument in sysic?

I've been getting a problem with the sysic syntax I am changing the number and the combination of outputs when using sysic as below.

for i=1:10
    Elements=nchoosek(n,i);
    numComb=size(Elements,1);
    for j=1:numComb
        element=Elements(j,:);
        try
            Ws=sel(WsAll,element,element);
            systemnames = ' P Ws Wt Wn';
            inputvar =  '[ dist{4}; noise{12}; control{4} ]';
            outputvar = '[ Ws; Wt; -P-Wn]';     % Ws=7, Wt=4
            input_to_P = '[ control + dist ]';
            input_to_Ws = '[ P(element) ) ]';
            input_to_Wt = '[ control ]';
            input_to_Wn = '[ noise ]';
            sysoutname = 'G';
            cleanupsysic = 'yes';
            sysic;
            [K, CL, gamma] = hinfsyn(G,12,4,1,10,0.01,2);
        catch ME
            fprintf('%s\n',ME.message);
            continue
        end
        combinations(count,:)=element;
        gammas(count,:)=gamma;
        count=count+1;
    end
end

However, matlab does not accept a variable in sysic syntax. The error occurs at

input_to_Ws = '[ P(element) ) ]';

is there any way that I can assign a variable in sysic? Any help would be appriciated

Answer 1

[Walter Roberson]

Use mat2str to construct the strings that you pass in. For example

   input_to_Ws = mat2str(P(element));

[Kandai Watanabe]

Thank you for your comment, Walter. I just tried your the code and it gives me an error that says,

Check the expression input_to_Ws= '[0 0 0]'. The right-hand side of expression involves a system not listed in SYSTEMNAMES or an input variable not listed in INPUTVAR.

Do you know how to manage it to work?

[Walter Roberson]

Okay, I was mistaken before.

Use

              P_element = P(element);
              input_to_Ws = '[ P_element ) ]';