Skip specific line from a text file

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MS11 2020-9-22

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https://ww2.mathworks.cn/matlabcentral/answers/597616-skip-specific-line-from-a-text-file

回答： Walter Roberson 2020-9-22

I want to read 2041 text files from a folder but mostly files contain 'error found' at the last. How can I skip that line from reading by the code. Picture of the file has been attached.

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Answer 1

Ruger28 2020-9-22

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https://ww2.mathworks.cn/matlabcentral/answers/597616-skip-specific-line-from-a-text-file#answer_498217

One approach using fgetl. Another would be to read the entire file in, and just search and throw out that line.

fname = '409.txt'
FID = fopen(fname,'rt');
cntr = 1;
loopEn = 1;
while loopEn
    temp = fgetl(FID);
    if ~strcmpi(temp,'e r r o r  f o u n d') % skip line of error found
         FileData{cntr} = temp;
         cntr = cntr + 1;
    elseif temp == -1
        break;
    end    
end

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MS11 2020-9-22

thank you Ruger but there are 2041 files and mostly contain the same problem. How can SKIP this from all files so my code doesn't stop.

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Answer 2

Walter Roberson 2020-9-22

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https://ww2.mathworks.cn/matlabcentral/answers/597616-skip-specific-line-from-a-text-file#answer_498247

If you use fopen / textscan / fclose, then you can specify 'commentstyle', 'e r r' . That tells it to skip from 'e r r' to the end of the line when it it is reading in data.