MATLAB: How do i change a variable name from workspace

digital image processingMATLABworkspace

i have a sequence of .mat files. When i load the mat files into workspace, the variable names are composed of sing or double underscore such as 'IR0004__, IR 10001_'. Thus, i would like to change these variables to be only number. How can i delete the underscore?

Please suggest Thank you

Best Answer

new_var_name=old_var_name;
clear('old_var_name');

Related Solutions

MATLAB: How to programatically make workspace variable name same as the .mat file name loaded into Matlab

A much better approach than awful dynamic variable names is to use simple, efficient indexing, e.g.:

D = 'path to the directory where the files are saved';
S = dir(fullfile(D,'*.mat'));
for k = 1:numel(S)
    F = fullfile(D,S(k).name);
    C = struct2cell(load(F));
    S(k).data = C{1}; % assumes exactly ONE variable per file
end

All of the data will be stored in the structure S:

https://www.mathworks.com/help/matlab/matlab_prog/access-multiple-elements-of-a-nonscalar-struct-array.html

MATLAB: Imwrite() problem with saving sequence images

Here is how I would do it:

 output_folder = 'C:\Users\Tossaworn\Desktop';
 files = dir('*.mat'); 
 for fidx = 1:numel(files)
    matcontent = load(files(fidx).name);  %load into structure
    filenumber = regexp(files(fidx).name, '\d+', 'match', 'once');  %get numeric part of filename
    imagename = sprintf('IR%s__', filenumber);   %build variable name
    assert(isfield(matcontent, imagename), 'mat file %s does not contain image %s', files(fidx).name, imagename);
    outputfilename = fullfile(output_folder, sprintf('test%s.tif', filenumber));
    imwrite(matcontent.(imagename), outputfilename);
  end

Best Answer

Related Solutions

MATLAB: How to programatically make workspace variable name same as the .mat file name loaded into Matlab

MATLAB: Imwrite() problem with saving sequence images

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