How to skip randomly occurring header lines using textscan

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Par 2011-12-20

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https://ww2.mathworks.cn/matlabcentral/answers/24357-how-to-skip-randomly-occurring-header-lines-using-textscan

Hello,

I wish to use textscan to read a large text file have two tab separated numbers in each line. The problem is, once in a while, the file has a header line beginning with a '>' character. How do I use textscan to read the file skipping the header lines whenever they occur? I tried using fgetl and the code has been running for several hours and is still running! I know textscan will do it in seconds. If anybody knows a solution, please help.

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Answer 1

Walter Roberson 2011-12-20

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Provided that the '>' does not occur otherwise, use 'CommentStyle', '>' as a textscan parameter/value pair, and it will ignore from the '>' to the end of the line.

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Par 2011-12-20

Thanks Walter! To think of it, this solution was right under my nose, I just needed to read the help carefully. Nevertheless, I missed it. I needed someone like you to point this out to me! Thanks again.

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