Thread Subject: cell array,for loop

Dear all:
     I really need help.
    So I post it again, because the first post is too messy, so I delete some statement in this version.

     I can run an iteration below well,

    n=length(c{1}-1);
    decay=ones(n,3);
for i=1:n
    k=c{1}(i,3);
    x=cT{1}(k:k+1000,1); Y=cT{1}(k:k+1000,2);
end


But after I put the iteration above into another iteration below, it doesn't.
The problem is 'x=...; Y=...' sentence below:
 
for j=1:5
    n=length(c{j}-1);
    decay=ones(n,3);
  for i=1:n
    k=c{j}(i,3);
    x=cT{j}(k:k+1000,1); Y=cT{j}(k:k+1000,2);
  end
end

Any help will be welcome.

Dear Guangping!

> I really need help.
> So I post it again, because the first post is too messy, so I delete some statement in this version.
>
> I can run an iteration below well,
> ...
> But after I put the iteration above into another iteration below, it doesn't.
> The problem is 'x=...; Y=...' sentence below:

"it doesn't" and "the problem is <line of code>" is not really detailed description of the error. Please post the exact error message!
I'd suggest to use an extra line for each statement, because the error message can tell you, which of the two statements causes the problems.

Kind regards, Jan