problem in defining function in matlab

 Hi everyone

I have a problem with the code below, in this code i want to write some equations. The problem with defining mu1 how can ii define it, i am new in matlab and i cannot define it.

    for i=1:200
        for j = 1:9 
           y{i,j}= CensoredGaussian(mu1(i,j),psi1(j),thd(j,z1(i,j)),thd(j,z1(i,j)+1)); 
        end

        mu1{i,1}= {mu.y1(1)+xi1(i,1)}; 
        mu1{i,2}= {mu.y1(2)+lam1(1)*xi1(i,1)}; 
        mu1{i,3}= {mu.y1(3)+lam1(2)*xi1(i,1)};
        mu1{i,4}= {mu.y1(4)+lam1(3)*xi1(i,1)};

    end

The error is ??? Undefined function or method 'mu1' for input arguments of type 'double'.

Any help would be highly appreciated. many thanks in advance

[Aravind Singh]

Add Following code at first line. This will construct a cell array..

mu1 = cell(10,10);

c = cell(m, n) or c = cell([m, n]) creates an m-by-n cell array of empty matrices. Arguments m and n must be scalars.

see help for more info

Answer 1

[per isakson]

Add

   mu1 = cell( 200, 4 );

before the for-loops and read Preallocate Memory for a Cell Array

Next replace

    mu1{i,1}= {mu.y1(1)+xi1(i,1)};

by

    mu1(i,1)= {mu.y1(1)+xi1(i,1)};

etc. to do what I believe you intended. And read Access Data in a Cell Array

Finally, I would like to ask, why do you use cell arrays in the first place.

Answer 2

[thanoon younis]

Thank you very much for your response. I have now a problem here

    for j = 1:9 
        y1{i,j}= CensoredGaussian(mu1(i,j),psi1(j),thd(j,z1(i,j)),thd(j,z1(i,j)+1)); 
    end

the problem is

    ??? Error using ==> subsindex
    Function 'subsindex' is not defined for values of class 'cell'.

how can i define subsindex using cell

many thanks again

[per isakson]

• Did you preallocate y1?
• What does CensoredGaussian return?