How to repeat a for loop

Hello All,

I have the following code and I need some help to get the commands to repeat the loops whenever the matrix start_pf is not equal to the matrix end_final by using for the repetition the matrix end_final as the starting matrix.

num_cols=length(data)
start_pf=[data{1,1}(1,1),data{1,2}(1,1),data{1,3}(1,1),data{1,4}(1,1),data{1,5}(1,1),data{1,6}(1,1)];
for i=1:1:num_cols
    if i==1  
        iteration=[reshape(data{i},length(data{i}),1),repmat(start_pf(1,i+1:end),length(data{i}),1)];        
    else        
        iteration=[repmat(iteration(best1,1:i-1),length(data{i}),1),reshape(data{i},length(data{i}),1),repmat(iteration(best1,i+1:end),length(data{i}),1)];    
    end   
    for j=1:1:length(data{i})           
        y(j)=a(1,iteration(j,1)) + a(2,iteration(j,2)) + a(3,iteration(j,3)) + a(4,iteration(j,4)) + a(5,iteration(j,5)) + a(6,iteration(j,6)) ;
        x(j)=function1(iteration(j,1),iteration(j,2),iteration(j,3),iteration(j,4),iteration(j,5),iteration(j,6));    
        z(j)=y(j) + y(j);   
        best1=find(z==min(z));
    end
end_pf=iteration(best1,:);
end

As I mentioned i need some commands to help comparing the matrices start_pf and end_pf and if they are not equal I want to repeat the loops by using this time the end_pf as the starting point . I try the following but it did not work:

if (first_row_opt~=init_portfolio)
    init_portfolio=first_row_opt;
end

Thanks

Answer 1

[James Wright]

Hi, Have you tried using a while loop instead?

i.e.

while first_row_opt ~= init_portfolio
all your code
end

of course you will have to make a few other changes to your code to re-assign variable you want to change each loop. hope this helps,

James