How to append two datas of two different .mat files into one .matfile?

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Suchithra K S
Suchithra K S 2019-5-29
编辑： Stephen23 2019-5-29
One .matfiel contains one feature having 1x20 coefficient and another .matfile contain only one value. Then how to append this two into one .mat file?

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回答（2 个）

Stephen23
Stephen23 2019-5-29
编辑：Stephen23 2019-5-29
It is very easy to efficiently create the union of two .mat files:
>> copyfile('A.mat','C.mat') % C will be the merged file
>> S = load('B.mat');
>> save('C.mat','-struct','S','-append')
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Suchithra K S
Suchithra K S 2019-5-29
编辑：Stephen23 2019-5-29
"Repeat the second two lines as often as needed (hint: use a loop)."
is the below given code is ok or not
copyfile('c7i.mat','r77i.mat') % r77i will be the merged file
S = load('w7i.mat');
save('r77i.mat','-struct','S','-append')
S = load('t7i.mat');
save('r77i.mat','-struct','S','-append')
Stephen23
Stephen23 2019-5-29
编辑：Stephen23 2019-5-29
"is the below given code is ok or not"
If you are aiming to create the set union of the variables saved in three .mat files, then yes.
Note that you could easily test that yourself, by running this code on a few test .mat files.

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Piyush kant
Piyush kant 2019-5-29
What i got from your question you have a variable suppose x=randi(1,20); which is 1x20 in size in "file1.mat". Another variable suppose y=31; in separate mat file"file2.mat" and you ned both to be in a single mat file which could be "newfile.mat".
For this you just need to load both the files for the variables to appear in workspace and use save command to save those into new variable.
x=load('file1.mat');
y=load('file2.mat');
save('newfile','x','y')

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