Continue if file doesn't exist - pop_loadset

Question

bruno mansur 2020-3-16

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/511118-continue-if-file-doesn-t-exist-pop_loadset

评论： bruno mansur 2020-3-16

I want my pop_events function to be executed to all '.set' files in a directory. The files are named as p[1:44]_0[1:3].set.

My code is the following:

sub = [1:44];

run = [1:3];

for i = sub

for j = run

EEG = pop_loadset('filename',sprintf('p0%i_%i.set', i,j),'filepath','.../2_correctTriggers/');

EEG = eeg_checkset( EEG );

pop_expevents(EEG, sprintf('.../p0%i_%i.csv', i, j), 'seconds');

end

But there are some missing files, like the p02_03.set, so the for loop returns this message when it comes to this file:

Error using load

Unable to read file

'.../2_correctTriggers/p02_3.set'.

No such file or directory.

Error in pop_loadset (line 119)

TMPVAR = load('-mat', filename);

Error in extract_log_files (line 6)

EEG = pop_loadset('filename',sprintf('p0%i_%i.set',

i,j),'filepath','.../2_correctTriggers/');

How can I write a code that skips inexistent files and continue the loop?

I would really appreciate any help,

Cheers

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Answer 1

Jakob B. Nielsen 2020-3-16

2
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/511118-continue-if-file-doesn-t-exist-pop_loadset#answer_420358

在 MATLAB Online 中打开

Use the exist or isfile functions.

E.g.

for i = sub
    for j = run
        if exist(['.../2_correctTriggers/',sprintf('p0%i_%i.set', i,j)]) 
            EEG = pop_loadset('filename',sprintf('p0%i_%i.set', i,j),'filepath','.../2_correctTriggers/');
            EEG = eeg_checkset( EEG );
            pop_expevents(EEG, sprintf('.../p0%i_%i.csv', i, j), 'seconds');
        else
            %do nothing
        end
    end
end