read a line frome file

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zina ben 2012-1-14

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https://ww2.mathworks.cn/matlabcentral/answers/26116-read-a-line-frome-file

 I have a data.m file with the following data:
 1
 2 3 5
 3 3 2
 8
 9 
 i have use the following to load file and its work
 load('data.m');
 now i want to read just the 1st row, 3rd row and the 4th row
 please help me, i need your help

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Jan 2012-1-14

Please do not post three threads for one question. You can edit a question to improve it. I recommend to delete the older threads.

Walter Roberson 2012-1-14

Duplicate is at http://www.mathworks.com/matlabcentral/answers/26098-read-data-from-m-file

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Answer 1

Jan 2012-1-14

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https://ww2.mathworks.cn/matlabcentral/answers/26116-read-a-line-frome-file#answer_34128

在 MATLAB Online 中打开

M-files are usually text files, which contain Matlab commands. It is a bad idea to fill an M-file with some numbers only. Most of all load is not sufficient to read your data file. Better use fopen and fscanf and skip the lines, which you want to ignore.

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Walter Roberson 2012-1-14

http://www.mathworks.com/help/techdoc/ref/fopen.html

http://www.mathworks.com/help/techdoc/ref/fscanf.html

http://www.mathworks.com/help/techdoc/ref/fclose.html

Ingo 2012-1-14

In addition:

You could also use csv files (comma-separated) and use readcsv and so on. Those Matlab functions already come with the extra of only reading certain rows/columns/areas.

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