from .mat to .txt

Hello, my question is simple and please I request a simple answer, How to convert a big table of data .mat to a text file preserving the same size? I can't give names of variables it's just a matrix full of numbers, the size is bigger than 1000, Thanks in advance!

Answer 1

[Jan]

The question is a little bit vague. I guess, you want something like this:

Data = load('FileName.mat');
DataField = fieldnames(Data);
dlmwrite('FileName.txt', Data.(DataField{1}));

[Wafia]

Thank you Jan, this works fine, but sorry may be I don't know alot about Matlab, how to open this new file as a text? I've just tried and it doesn't work!

[Titus Edelhofer]

Usually

edit FileName.txt

But depending on the size of the file, this might fail in MATLAB. Use any operating system editor to edit the file.

[fateh]

this codes give symbol ',' between columns. Then, how could i replace ',' with blank space?

[Yuanjun Zhao]

Hi fateh, just make it like this dlmwrite('FileName.txt', Data.(DataField{1}), 'delimiter', ' ');

[SUSHMA MB]

How can i convert the .mat file into the following format of .txt file

 x={
 ( 0.000000 0.000000 )
 ( 0.500000 0.333333 )
 ( 0.250000 0.666667 )
 ( 0.750000 0.111111 )
 ( 0.125000 0.444444 )
 ( 0.625000 0.777778 )
 ( 0.375000 0.222222 )
 ( 0.875000 0.555556 )
 ( 0.062500 0.888889 )
 ( 0.562500 0.037037 )
}

[Jan]

@SUSHMA MB: Please do not append new questions as comment to answers of a different question. Open a new thread instead. Note that the readers cannot know, what "the .mat file" is.

Most likely the answer will be easy:

data = rand(10, 2);  % Perhaps this is the contents of the MAT file
fid = fopen(FileName, 'w');
if fid==-1, error('Cannot open file: %s', FileName); end
fprintf(fid, 'x={\n');
fprintf(fid, '( %.6f %.6f )\n', data.');
fprintf(fid, '}\n');
fclose(fid);

Do you see the problem? Now you cannot accept the answer and further comments will confuse the readers, because it is unclear, if they concern the original or your question. Therefore such "thread-highjacking" is not wanted.

Answer 2

[Fangjun Jiang]

Follow the related question that I asked. Save workspace to m-file. Basically use Simulink.saveVars if you have it.

Answer 3

[Sean de Wolski]

As of R2014a, you can also use saveVariablesToScript