Dlmwrite in looping - only records the last Linha of the matrix in the text file

Hi

This is my script:

for n=1:numel(LonUq)
  for m = 1:numel(LatUq)
    ind = find(LLDAm(:,2) == LonUq(n) & LLDAm(:,1) == LatUq(m));
    if (isempty(ind)),  continue;   end
    p = polyfit([0; agemodel(ind)],[0; depth(ind)], 1);
    idade_int(m,n) = polyval(p,  20);                                                   
    a = [LatUq(m), LonUq(n), idade_int(m,n)];
    disp(a);
    dlmwrite('saveteste.txt', a , 'delimiter','\t', 'precision', 4 )
  end
end

but when, i record txt file, appears only the last line that was executed in the cycle ( a ). While in the command window pops up all the lines.

For example:

Txt file: (a)

20.2917 -18.2617 1.5621

Command Window: (a)

   30.7492  -20.0000    0.8333
   20.7492  -18.6808    5.0000
   20.7492  -18.5808    5.0451
   30.7492  -18.5808    5.0000
   20.2917  -18.2617    1.5621
   20.2917  -18.2617    1.5621

Thanks

Answer 1

[Image Analyst]

Make the badly-named "a" a 2D array and put a single call to dlmwrite() AFTER the two loop s.

[Nuno Simões]

Hi, Thanks for your answer. I understood your answer, but I tried to use 2D array and it continues giving an error.

When the error doesn't happens, this script continues saving just one row of values (As I explained before in my other question)

I tried to use the following scripts and I changed the dlmwrites after 2 loops:

   aa[(m*n),3] = [LatUq(m), LonUq(n), idade_int(m,n)]

Or

   aa = ones((m .* n),3);   
   aa[(m*n),3] = [LatUq(m), LonUq(n), idade_int(m,n)]

Sorry

Thanks

[Image Analyst]

Why are doing [(m*n), 3]???? Does that even work at all? DOesn't even look like correct syntax. Try

aa = zeros(numel(LatUq), numel(LonUq), 3); % Initialize before the loop.

Then in the loop:

aa(m, n, :) = [LatUq(m), LonUq(n), idade_int(m,n)];

[Nuno Simões]

Yes, that works.

But it shows this:

0 0 0 20.29 0 0 0 -18.26 0 0 0 1.562

0 20.75 20.75 0 0 -18.68 -18.58 0 0 5 5.045 0

30.75 0 30.75 0 -20 0 -18.58 0 0.8333 0 5 0

and not what I want:

   30.7492  -20.0000    0.8333
   20.7492  -18.6808    5.0000
   20.7492  -18.5808    5.0451
   30.7492  -18.5808    5.0000
   20.2917  -18.2617    1.5621
   20.2917  -18.2617    1.5621

Sorry, but i am very confuse.

Thank you very much.