Write values of large cell to .inp file

I have a 10 by 1 cell titled elsets, in each cell I have a 200x1 double.

I would like to print these values to a .inp file. I have no trouble opening the file but, how do I write the values of the doubles 15 lines and once the row is filled, have MATLAB automatically write numbers to the next line?

I need the final results to look like a .inp file for abaqus.

filename = 'test.inp';

fid = fopen(filename, 'w');

for phase = 1:10

fprintf(fid, '*Elset, elset=Phase1_%d \n', phase);

for i = 1:cell2mat(elsets)

fprintf( '%d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d, %d\n', elsets{i});

end

end

Answer 1

[Stephen23]

Do not use nested loops! Your approach mixes up nested loops and a format string that prints each line. Better:

fmt = repmat(',%d',1,16);
fmt = [fmt(2:end),'\n'];
fnm = 'test.inp';
fid = fopen(fnm,'wt');
for phase = 1:numel(elsets)
    fprintf(fid, '*Elset, elset=Phase1_%d\n', phase);
    fprintf(fmt, elsets{phase});
end
fclose(fid); % !!! ALWAYS remember to FCLOSE any file that you FOPEN !!!

[Maggie Chong]

fmt = repmat(',%d',1,16);

fmt = [fmt(2:end),'\n'];

for phase = 1:size(elset_labels,1)

fprintf(fid, '\n*Elset, elset=Phase1_%d\n', phase);

fprintf(fid, fmt, elsets{phase});

end

Hello Thanks for your code! I noticed there was a small formatting error but overall it works great!

Answer 2

[Kautuk Raj]

A combination of fprintf and loops can be used to write the values of the doubles in your cell array to a text file. A sample code that demonstrates one way to do this:

% Open the output file for writing
fid = fopen('output_file.inp', 'w');

% Loop over each cell in the elsets cell array
for i = 1:numel(elsets)
    % Get the current double array
    current_array = elsets{i};
    % Loop over each element in the double array
    for j = 1:numel(current_array)
        % Write the current value to the output file using fprintf
        fprintf(fid, '%f ', current_array(j));
        
        % Check if we have written 15 values on this line
        if mod(j, 15) == 0
            % If we have, write a newline character to start a new line
            fprintf(fid, '\n');
        end
    end
    
    % After writing all the values for the current array, write a newline
    % character to separate the arrays
    fprintf(fid, '\n');
end

% Close the output file
fclose(fid);

Each line in the file contains 15 values separated by spaces. Once the line is filled with 15 values, the next 15 values are written on a new line. After all 200 values for a particular cell in the elsets cell array have been written, a blank line is inserted to separate the values for that cell from the next cell. This pattern repeats for all 10 cells in the elsets cell array.