write multiple line of text into a text file
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Ali
le 3 Août 2017
Commenté : Walter Roberson
le 5 Août 2017
Simple question; I have this variable which I want easily write to a text file (it can be a hundred of lines, I just cut it into 4 to fit here)
app.DCMtxt.Value
ans =
4×1 cell array
'3 Message(s) transmitted '
''
' ws BUS ID Rx Node DLC Cycle Extended'
' ______ ___ ____ __ ____ ___ _____ ________'
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Walter Roberson
le 4 Août 2017
fid = fopen('output.txt','w');
fprintf(fid, '%s\n',app.DCMtxt.Value{:}) ;
fclose(fid) ;
4 commentaires
Rik
le 5 Août 2017
You might need to replace the control characters:
escaped_cellstr=app.DCMtxt.Value;
escaped_cellstr=strrep(escaped_cellstr,'%','%%');
escaped_cellstr=strrep(escaped_cellstr,'/','//');
fid = fopen('output.txt','w');
fprintf(fid, '%s\n',escaped_cellstr) ;
fclose(fid) ;
Walter Roberson
le 5 Août 2017
No, Rik, that is not needed. That would only be needed if you were using the string content inside the format. For example, the following would be a problem:
fid = fopen('output.txt','w');
for jj = 1 : size( app.DCMtxt.Value, 1 )
fprintf( fid, app.DCMtxt.Value{jj,1} );
fprintf( fid, '\n' );
end
fclose(fid);
Plus de réponses (1)
Will Wilson
le 4 Août 2017
If you didn't want to use a for loop directly you could use a newer datatype called a table and one if it's helper functions to get the job done. Here is an example:
% Convert your [m x 1] cell array into a MATLAB table.
data = cell2table(app.DCMtxt.Value);
% (Optionally) name the column in your table.
data.Properties.VariableNames = {'DataSet'};
% Write the table out to a text file.
writetable(data,'OutputData');
This should do the trick. Ultimately it will depend on how much control you need on the text file you write out.
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