Question

i have the following code,in which i am trying to find all data.m files and delete string that matches expr.

fileData = dir();  
m_file_idx = 1;     
filenames = {fileData.name};  
index = regexp(filenames,'\w*_data.m\w*','match') ;
inFiles = filenames(~cellfun(@isempty,index));    
i=1;
for idx = i : length(inFiles)        
    data_m_files=inFiles{i}; 
    disp(data_m_files)
    C = textread('data_m_files', '%s', 'delimiter', '\n');
    expr ='\.DataType[ =]+''auto''';  
 C = C(cellfun(@isempty, regexp(C, expr)));
    i=i+1;
end

my output is:

this_is_data.m

Error using textread (line 167)
File not found.

if i use the same code by manually entering the data_m_file name,textread works fine and i get the desired result.but when i try to put in the loop,it gives me error.am i using textread incorrectly?
thanks

Answer 1

Yes, you’re using textread incorrectly.

The first argument of textread must be a string containing the file name. You have specified it to be 'data_m_files', so MATLAB looks for a file named “data_m_files”, which obviously does not exist.

You should pass the value of data_m_files, so remove the quotes from 'data_m_files', like so:

C = textread(data_m_files, '%s', 'delimiter', '\n');

and this should work.