Write values of large cell to .inp file

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Maggie Chong
Maggie Chong 2023-6-15
评论： Maggie Chong 2023-6-16
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

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采纳的回答

Stephen23
Stephen23 2023-6-16
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 !!!
  1 个评论
Maggie Chong
Maggie Chong 2023-6-16
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!

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更多回答（1 个）

Kautuk Raj
Kautuk Raj 2023-6-16
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.

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