MATLAB: Change the structure of multiple .txt files and store them as .mat files

multiple files

I have 15 .txt files that I choose them from my directory and I need to change their structure and save them as .mat files. So far I can only do this for 1 file.
Here is my code:
d=dir;
dstr={d.name};
[s,ok]=listdlg('PromptString','Select Catalog:',...
    'SelectionMode','Double',...
    'ListString',dstr);
fid=fopen(dstr{s});
a=fscanf(fid,'%4d %2d %2d %2d %2d %g %g %g %g %g  \n',[10,inf]);
a=a';
fclose(fid);
%--------------------------------------------------------------
IDQ=a;
% time
year = IDQ(:,1);
month = IDQ(:,2);
day = IDQ(:,3);
hour = IDQ(:,4);
minute = IDQ(:,5);
second = IDQ(:,6);
timeVec = [year,month,day,hour,minute,second];
time = datenum(timeVec);
catalog.time = time;
save('catalog.mat','catalog');

Best Answer

txtfiles = dir('*.txt') ;   % you ar eint he folder of text files 
N = lenght(txtfiles) ;   % Total number of files 
for i = 1:N 
    thisfile = txtfiles(i).name ; 
    % read file 
    fid=fopen(thisfile);
    a=fscanf(fid,'%4d %2d %2d %2d %2d %g %g %g %g %g  \n',[10,inf]);
    a=a';
    fclose(fid);
    %--------------------------------------------------------------
    % IDQ=a;
    % % time
    % year = IDQ(:,1);
    month = IDQ(:,2);
    day = IDQ(:,3);
    hour = IDQ(:,4);
    minute = IDQ(:,5);
    second = IDQ(:,6);
    timeVec = [year,month,day,hour,minute,second];
    time = datenum(timeVec);
    catalog.time = time;
    filename = [catalog,num2str(i),'.mat'] ; 
    save(filename,'catalog');
end
    
    
    
end
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