Rename and save multiple .mat files.

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

[Walter Roberson]

Is there only a single variable in each of the .mat files?

[caesar]

yes , only one variable that is an array either :

A- single row vector of 24 elements ( numbers). for instance the Array_1.mat has only a 1*24 array named Array_1.

B- N By 8 array of elements ( number).

Because an error has happened, I want to rename the mat files and the single vector in each one altogether. assume there is three mat files :

Array_1.mat, Array_2.mat and Array_3.mat where they have Array_1, Array_2 and Array_3 respctively. I want to rename them as

A_12.mat,A_13.mat and A_14.mat,with vectors A_12,A_13 and A_14 respectively.

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 . [A_12;A_13;A_14].

thanks

[Stephen23]

@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]

@ 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     1
     2     2     2     2     2     2
     3     3     3     3     3     3

I hope this time its clearer

thanks

Answer 1

[per isakson]

"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?