Printing to specific lines in a text file

I have written code to generate 129 different 9 x 4 cells that contain text and numbers. I would now like to print all of these cells to a single text file, with each cell printed below the last one. How can I do this?

Answer 1

[Simon]

Hi!

It is not difficult if the same columns are text and numbers. You can simply loop over all data and printf with "fprintf".

Do you have 129 separate variables? If so, think about storing them in a structure (or 3d cell array) for easier access. If you have a 3d cell array, use

for n = 1:129
for r = 1:9
fprintf(fid, '%d %s %s %f\n', M{n, r, 1}, M{n, r, 2}, M{n, r, 3}, M{n, r, 4});
end
end

of course you need file handling with fopen/fclose in addition.

[Danny Coles]

Hi Simon,

Can you explain what you mean by 'of course you need file handling with fopen/fclose in addition'.

Cheers

[Walter Roberson]

fid = fopen('TheFileName.txt');

and at the end

fclose(fid);

[Simon]

Hi!

In addition to Walter's answer you should use

fid = fopen('TheFileName.txt', 'w');

to be able to write to the file. The fopen-command without permission is for read access only.