read replace decimals ,. commas to dot from txt files

Question

francesco 2013-7-12

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https://ww2.mathworks.cn/matlabcentral/answers/81872-read-replace-decimals-commas-to-dot-from-txt-files

编辑： Stephen23 2015-12-14

Hi there I am trying to import a file but the %%f%ff got commas as for decimals not possible to import if not had not written with dot. how can I replace thein in txt file?

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Answer 1

David Sanchez 2013-7-12

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https://ww2.mathworks.cn/matlabcentral/answers/81872-read-replace-decimals-commas-to-dot-from-txt-files#answer_91567

在 MATLAB Online 中打开

The comma is an issue in Matlab, could you use dots instead?

-0.229447 0.003749 0.003599
-0.056431 2.009800 1.003600
-0.229128 0.004065 0.004236
-0.228810 0.004382 0.003599

If 'data.txt' is your containing file, the following should work:

fid = fopen('data.txt');
my_data = fscanf(fid, '%f %f %f', [3 4]);
fclose(fid);

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Answer 2

francesco 2013-7-12

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https://ww2.mathworks.cn/matlabcentral/answers/81872-read-replace-decimals-commas-to-dot-from-txt-files#answer_91573

files are exported from labview in txt, are saved with commas, I think I will reach a solution exporting data from LB, dots and commas create problems as because in Europe to US the use of comma-dot in numers is different.

There is any solution to modify, in Matlab the %f number recognison with commas? dude so I hope and search:)