How to save multiple .mat files as one .mat file?

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David Mascarenhas 2021-7-1

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评论： David Mascarenhas 2021-7-31

Hello,

I have a matlab script that processes some data for each hour of the day and saves each result as > " result_ddmmyy_hh.mat " file.

This gives me a file of all the resultant data processed for that hour.

I use this script on a loop to study the data for the whole day and then the same for the whole week.

Now I have too many files (24 X 7). I would like to store all the results of each day as one complete file, that way i will have only 7 meta-data files.

Is there a way to do this directly without re-running the entire script? Can I directly merge multiple .mat files into one .mat file?

Thank you in advance!

David :)

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Answer 1

Jeff Miller 2021-7-2

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https://ww2.mathworks.cn/matlabcentral/answers/869923-how-to-save-multiple-mat-files-as-one-mat-file#answer_738123

在 MATLAB Online 中打开

You can load all 24 .mat files for a single day and then save all of the collected variables together as one .mat file. For example:

Collected = cell(24,1);
for Hour=1:24
    fname = ['FileForHour' num2str(Hour) '.mat'];
    Collected{Hour} = load(fname);
end
save('CollectedForThisDay','Collected')

Details might change a bit depending on how the hourly variables are named and how you want them named in the collected file.

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Jeff Miller 2021-7-2

No, the method will save the variables for all hours---not just the last one.

For example, Collected{1}.Var1 will be the value of Var1 for the first hour, Collected{2}.Var1 wil be the value of Var1 for the second hour...Collected{24}.Var1, and so on for all variables.

In the saved file, you can think of each Collected{k} as a folder with its own collection of variables.

David Mascarenhas 2021-7-31