Is there a way to suppress command outputs to command window?
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Hello guys, I know I can use ; in the end of the commands to prevent them from echoing to the command windows. But now, my situation is that I have a very long code, dispersed in so many m files.
Several command in them, on purpose, for sake of reporting the status, (and useful for debugging( do not have semicolons. Now I am running the code in a loop, and I think having all these outputs slows the process.
How can I suppress all command outputs, without manually going through the long code and putting a semicolon on each line?
Bonus question: There are some disp functions as well that report to the command line. can I also suppress them?
Thanks
回答（6 个）
Sean de Wolski
2014-5-16
evalc('yourmainfile');
4 个评论
Ehsan na
2014-5-16
Sean de Wolski
2014-5-16
The callbacks will be evaluated from elsewhere, so yes, this won't work for an app.
What I would recommend doing is taking an hour or two and going through and adding the following around your disp statements:
if isverbose
disp whatever
end
Then you can write a function "isverbose". If it returns 1, the disp is evaluated other wise it returns zero and it isn't. This will give you the flexibility you desire in an elegant way.
Ehsan na
2014-5-19
Sven
2015-10-8
Thanks a lot! Worked for me for suppressing command line outputs of a model dependency function:
evalc('[files, ~, ~, ~] = dependencies.fileDependencyAnalysis(ModelName, ''manifestfile'')');
Jos (10584)
2014-5-16
编辑：Jos (10584)
2014-5-16
You can create a function in the current directory or top directory of the path called disp.m and put the following single line of code in there:
function thisdoesnothing (varargin)
If you need to use DISP again, just change the name of the m-file to something else (e.g. thisdoesnothing.m)
Azzi Abdelmalek
2014-5-16
fid1 = fopen('your_file.m');
fid2=fopen('new_file.m','w')
res={};
while ~feof(fid)
line1 =[fgetl(fid) ';'];
res{end+1,1}=line1
fprintf(fid2,'%s \r\n',line1)
end
fclose(fid1);
fclose(fid2);
3 个评论
Ehsan na
2014-5-16
Azzi Abdelmalek
2014-5-16
I didn't change your file, just created another one, you can choose to run the first or second one
Ehsan na
2014-5-19
If you're using a sufficiently recent release of MATLAB, create a codeIssues object for the file then call fix with the object and the CheckID of the issues you want to fix as inputs.
dbtype myfun129872.m % Note line 2 is missing its semicolon
issues = codeIssues('myfun129872.m')
% fix(issues, "NOPRT")
I didn't make the fix call executable in Answers because I wanted to show you the file with the code issue present and didn't want to have to keep replacing the file each time I ran the code. I did run it in a local session of MATLAB, however, and confirmed it added the semicolon.
Matt J
2025-5-3
0 个投票
As a partial solution, you can use favoriteForceSemicolons.m from this File Exchange download,
It is easiest if you install it as a Quick Access button, as recommended in the Desciption section of the submission.
With this, you can open a file in the Matlab Editor and do Select All (Ctrl-A) in a given file. When you apply favoriteForceSemicolons(), it will add semicolons to all relevant lines of code. I don't know if there is a way to automate this process across multiple files, however.
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