I want get matrix

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mks 2023-8-1

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/2003002-i-want-get-matrix

评论： Walter Roberson 2023-8-1

matrix_FA=zeros(SSf,SSa);
Ln_total=0;
while Ln_total<round(C0*SSf*SSa)
    Type=randi(2);   %,1:P->A; 2:A->P
    if Type==1
        if rand<=P_N
            f_si=randsrc(1,1,[1:SSf;F_site/sum(F_site)]);
        else
            f_si=randsrc(1,1,[1:SSf;1/SSf*ones(1,SSf)]);
        end
        si_part=ceil(4*f_si/SSf);
        
        if rand<=P_Q  
            
            
            A_rang=1+(si_part-1)*SSa/4:si_part*SSa/4;
            A_dens=A_site(1+(si_part-1)*SSa/4:si_part*SSa/4);
        else
            A_rang=1:SSa;
            A_dens=A_site;
        end
        if rand<=P_N
            a_si=randsrc(1,1,[A_rang;A_dens/sum(A_dens)]);
        else
            a_si=randsrc(1,1,[A_rang;1/length(A_rang)*ones(1,length(A_rang))]);
        end

please help me how they create this matrix

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Walter Roberson 2023-8-1

You initialize matrix_FA but you never store anything into it?

You calculate several variables but you do not take copies of them each iteration, so the final result stored in them is going to be whatever was stored in the last iteration.

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