Rename and save multiple .mat files.

Question

caesar 2019-10-13

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/485101-rename-and-save-multiple-mat-files

评论： caesar 2019-10-15

Hi

I am trying to load, rename and save a group of mat files . so far I am using this code :

cd 'E:\Mat'
fileFolder = fullfile('E:\','Mat');
% cd (fileFolder)                
dirOutput = dir(fullfile(fileFolder,'*.mat'));
fileNames = {dirOutput.name};
for k=1:length(fileNames)
    H=fileNames{k};
   movefile(H, sprintf('All_state_action_qs_%03d.mat', k));
end

although it does rename all the files properly, when I load any files (with new name) the name on the work space is the old name.

Therfore, I guess there is a way for doing Load>Rename>save again in a batch fashion.

regards

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Stephen23 2019-10-15

@caesar: putting numbers into variable names is a sign that you are doing something wrong. It is unlikely to help you, just make your code complex, slow, obfuscated, and buggy.

"also I would be grateful if you can tell me how can extract the vector from within those mat files and stack them in one N*24 matrix"

I get the feeling that you are not actually asking us what you are really trying to achieve:

http://xyproblem.info/

Probably it would also help if you uploaded some sample data, by clicking the paperclip button.

caesar 2019-10-15

@ Stephen Cobeldick

Ok , sorry if did confuse you . assume I have the following code

all=[];
first_1=[1 1 1 1 1 1];
first_2=[2 2 2 2 2 2];
first_3=[3 3 3 3 3 3];
save('firs_1.mat','first_1');
save('firs_2.mat','first_2');
save('firs_3.mat','first_3');

and I want to :

1- load first_1.mat,firs_2.mat and firs_3.mat

3- rename vectors first_1,first_2 and first_3 to:

first_11,first_12,first_13

3- save them in mat files :

firs_11.mat,firs_12.mat and firs_13.mat

3 - Form ALL that looks like :

all =
   1     1     1     1     1
   2     2     2     2     2
   3     3     3     3     3

I hope this time its clearer

thanks

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Answer 1

per isakson 2019-10-14

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/485101-rename-and-save-multiple-mat-files#answer_396178

"the name on the work space is the old name" What do you expect? It's the names of the variables contained in the mat-file. They aren't affected by the name of the mat-file.

How exactly do you load the renamed mat-file?