Using fgetl() to read lines

Question

ZK 2013-1-10

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https://ww2.mathworks.cn/matlabcentral/answers/58472-using-fgetl-to-read-lines

采纳的回答： Amith Kamath

How can I choose different line to read instead first line, using fgetl() formula?

Thank you.

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Answer 1

Amith Kamath 2013-1-10

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https://ww2.mathworks.cn/matlabcentral/answers/58472-using-fgetl-to-read-lines#answer_70748

在 MATLAB Online 中打开

http://www.mathworks.com/matlabcentral/newsreader/view_thread/297814 may be of some help. Unless you are constrained to using fgetl() for some reason,

C = textscan(fid, '%s','delimiter', '\n');
% Setup the line number in LineNum,
RelevantLine=C{1}{Linenum};

should do the trick.

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Amith Kamath 2013-1-11

I agree with Walter that this stores the entire file into the cell array, and isn't technically skipping lines. You could possibly choose more lines by using strcat on C{1}{LineNum1} and C{1}{LineNum2}.

ZK 2013-1-11

编辑：ZK 2013-1-11

Thank You I will remember that.

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Answer 2

Walter Roberson 2013-1-10

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https://ww2.mathworks.cn/matlabcentral/answers/58472-using-fgetl-to-read-lines#answer_70750

There is no method at the operating system level to position by line. The operating system itself uses fgetl() (or fgets()) to move forward by lines. MATLAB does not provide any "wrapper" over fgetl() to support skipping lines.