How to import multiple .m files

Question

liu James 2016-12-9

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https://ww2.mathworks.cn/matlabcentral/answers/316121-how-to-import-multiple-m-files

编辑： Stephen23 2016-12-10

Is there a simple loop or so to call multiple files and extract the sub structures from it where all .m files have the same substructure?

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Star Strider 2016-12-9

Are you asking about MATLAB script ‘.m’ files or binary ‘.mat’ files?

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Answer 1

Park Joohyung 2016-12-9

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I`m answering assuming that you are mentioning '.mat' file. ('.m' file is merely a matlab script file..) If the data you want to load has regular name, like 'name1.mat', 'name2.mat'..., I recommend you to use 'eval' function with for loop.

for i=1:10
    eval( ['load(''name' num2str(i) '.mat'')'] );
end

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Stephen23 2016-12-10

编辑：Stephen23 2016-12-10

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Do not do this. This is pointless usage of eval, which serves no functional purpose at all in this code, and will only make this code slower, buggier, and harder to follow:

https://www.mathworks.com/matlabcentral/answers/304528-tutorial-why-variables-should-not-be-named-dynamically-eval

Instead of writing cargo-cult code using eval, simply call load directly:

S = load(sprintf('name%d.mat',k))

Park Joohyung 2016-12-10

Thank you stephen, i admit that, your code looks much simpler.

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Answer 2

Image Analyst 2016-12-10

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See the FAQ for how to process a bunch of files: http://matlab.wikia.com/wiki/FAQ#How_can_I_process_a_sequence_of_files.3F.

In the middle of the loop, put Stephen's code to store all the structures pulled from your mat files.

matFullFileName = fullfile(pwd, sprintf('name%d.mat',k)); % Whatever.....
S{k} = load(matFullFileName) % Store this file's structure in our structure array.