how can I separate the rows of text file?

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Jungbae Yoon 2018-1-24

0
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https://ww2.mathworks.cn/matlabcentral/answers/378653-how-can-i-separate-the-rows-of-text-file

回答： Dan Klemfuss 2018-1-24

Hi I want to pick the specific row or column data but the problem is that text file is not saved as I wanted

For example

3 4 5 2

4 1

4 5 6 7

2 1

2 3 4 5

6 7

1 5 3 5

2 4

2 3 5 6

7 8

2 1 3 4

5 6

Even though the matrix is 6 by 6, it is saved like the above. So How can I read this txt file as 6 by 6 matrix

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Answer 1

Dan Klemfuss 2018-1-24

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Hello Jungbae. This isn't the most elegant solution, but it'll do the trick if you just need to repeat this task. Just replace the 'your_file_name.txt' with whatever you've named your file.

fileID = 'your_file_name.txt';
raw = fileread(fileID);                 % Read in file as characters
raw = strrep(raw,sprintf('\n'),'');     % Remove newline characters
raw = strrep(raw,sprintf('\r'),' ');    % Replace carriage returns with spaces
raw = strrep(raw,sprintf('  '),' ');    % Remove any double spaces leftover
val = reshape(str2num(strrep(raw,sprintf('  '),' ')),[6,6]); % Create a 6x6 numeric array