MATLAB: Code to read the data in matfile

data importdata read

let us take dat is matfile = 1684 *1 . i want to read first 100 values of the 1684 points . what is the function or code to use ?

Best Answer

Read the matfile documentation. It contains what you want.

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MATLAB: Saving large files using uisave

use uiputfile instead. Credit to Jan.

[filename, filepath] = uiputfile('*.mat', 'Save the project file:');
FileName = fullfile(filepath, filename);
save(FileName, 'yourVariable', '-v7.3');

MATLAB: Saving variable with -v7.3 flag check

Use the whos function:

varinfo=whos('data');
saveopt='';
if varinfo.bytes >= 2^31
  saveopt='-v7.3';
end
save('filename','data',saveopt);

This code is a bit too conservative in that it will use -v7.3 format when data is over 2gb but only needs to when a member of data is over 2gb. I do not see that as a problem and checking all members is a bit more work.

That said I would not do this. I would use the -v7.3 option for all files. Some day in the future it may complicate things to have files that are of different formats.

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Related Solutions

MATLAB: Saving large files using uisave

MATLAB: Saving variable with -v7.3 flag check

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