Problem with dlmwrite writeing a tensor in a csv file

Hi guys,

I need to save a tensor in a file..I'm using this solution:

n=268;

m=4381;

d=7;

dati_orig=zeros(n,m,p);

for i=1:n

    for j=1:m

        for k=1:p

            dati_orig(i,j,k)=dati_copia(i,j,k);
        end
    end
end

fid2 = fopen('dati_orig.csv','w');

for k=1:p

    ele=xmat_orig(:,:,k);
    dlmwrite('dati_orig.csv', ele, '-append' )
    dlmwrite('dati_orig.csv', ' ' ,'-append' )
end

fclose(fid2);

where dati_copia is the tensor to save. The tensor must to be wrote in the file in this manner:

1 2 3 \\ % \\ is equal to \n newline 4 5 6 \\ 7 8 9 \\ %a blank row 10 11 12 \\ 13 14 15 \\ 16 17 18 \\ ......

This code works fine because with a small tensor it's ok. But I'm writing a tensor of dimensions 268x4381x7 and between each slice there is not a blank line as I want. The csv file must to have 1888 lines but the file has only 1882 rows. Can someone help me? Is it the wrong code? Thanks. giuseppe

Answer 1

[Amit]

Try this:

% fid2 = fopen('dati_orig.csv','w');
for k=1:p
    % ele=xmat_orig(:,:,k);
    dlmwrite('dati_orig.csv', dati_orig(:,:,k), '-append' )
    dlmwrite('dati_orig.csv', ' ' ,'-append' )
end
% fclose(fid2);

BTW, if you're trying to save dati_copia, why copy it again exactly the same. Also, what is xmat_orig because this is what you're writing in the csv file in your code.

Answer 2

[giuseppe]

Hi,

there is an error of tensor name! I try with the new code but it is the same of my old code! For example: row 269 is blank and it is ok..but row 539 is not blank! giuseppe

[Amit]

Doesn't row 538 is suppose to be blank!

Also, please write your responses as comments and not as a new answer.