Problem with for loop.

Hello,

I´ve got a problem with the calculation of a matrix in a for loop. It seems easy to solve but I can´t find my fault in the following source code:

N=100
for i=1:10
   tfail = ixN-vector
   tfail_sort = sort(tfail);
   t_boot=0:1:max(tfail);
   z_boot=zeros(1,length(t_boot));
   for k=1:length(tfail);
        z_boot(k,:)=1.*(t_boot>=0 & t_boot<tfail_sort(k));
        z_boot(k,:)=z_boot(k,:)+0.*(t_boot>=tfail_sort(k));
   end
   R_m_boot(i,:) = (1/N)*sum(z_boot); % Sum the columns
end

Can somebody help me, please?

[Jos (10584)]

What is the error you get?

[Jan]

All we see ist the failing code. But we cannot guess, what it should do.

It cannot be useful to perform

z_boot(k,:) = z_boot(k,:) + 0 .* <anything>;

The multiplication by 0 is not useful in a sum.