MATLAB: How do i extract values from a name-value pair argument

cell arraysloopstringstext filetextscan

Can someone help me on this please. my function is this; fid=fopen('20160613.XVI'); C=textscan(fid,'%s%s','CollectOutput',true,'Delimiter',';'); data=C{1}(71:73,1); [~]=fclose(fid);

It returns the following; {'CouchShiftLat=-0.17' } {'CouchShiftLong=-0.08' } {'CouchShiftHeight=-0.09'} But i needed only the values; -0.17,-0.08 and -0.09.

Best Answer

files = dir('*.txt') ;   % Get all text files of the folder 
N = length(files) ;     % Total files 
% loop for each file 
for i = 1:N 
    file = files(i).name ;
    % do what you want 
end

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MATLAB: Saving data in .dat files

There is no specific format for a .dat file. You can use writematrix(): https://www.mathworks.com/help/releases/R2020a/matlab/ref/writematrix.html or dlmwrite(): https://www.mathworks.com/help/releases/R2020a/matlab/ref/dlmwrite.html in older versions.

For example,

writematrix(sr, 'filename.dat') % or dlmwrite('filename.dat', sr);

MATLAB: Loop through sub folders.

mainfolder = uigetdir;
subfolders = dir(mainfolder);
subfolders = subfolders([subfolders.isdir] & ~startsWith({subfolders.name},'.'));
for i = 1:length(subfolders)
    x = []; y = []; z = []; 
    files = dir(fullfile(mainfolder,subfolders(i).name,'*.xvi'));
    for k = 1:length(files);
        fid = fopen(files(k).name,'r');
              while ~feof(fid)
              st = fgetl(fid);           
               if  ~isempty(strfind(st,'CouchShiftLat'))
                 stread = textscan(st,'%s %f','Delimiter',';=');
                  x = [x; stread{2}(1)];
               elseif  ~isempty(strfind(st,'CouchShiftLong'))
                 stread = textscan(st,'%s %f','Delimiter',';=');
                  y = [y; stread{2}(1)];
               elseif ~isempty(strfind(st,'CouchShiftHeight'))
                 stread = textscan(st,'%s %f','Delimiter',';=');
                 z = [z; stread{2}(1)];
               end
              end
        fclose(fid);
    end
    Displacement=[x,y,z];
    % save here
end

Best Answer

Related Solutions

MATLAB: Saving data in .dat files

MATLAB: Loop through sub folders.

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