How to read only the first line/row in a text file?

This is my script. This script read through all columns and rows in the file. I want the script to only read the firs line/row in the text file.

 while ischar(tline)
               ii = ii + 1;
               tmp = textscan(tline, '%s ', 'delimiter', ' ', 'MultipleDelimsAsOne', 1);
               tmp = tmp{1};
               t(ii) = str2num(tmp{1});
                x(ii) = str2num(tmp{2});

              tline  = fgetl(fid);
            end

Answer 1

[Geoff Hayes]

kk1991 - if you only want to read the first line in the file, then don't use the while loop or use break to exit the loop once the first line has been read. Or do you mean something else by I want the script to only read the firs line/row in the text file.

For example, your code could become just

 tmp = textscan(tline, '%s ', 'delimiter', ' ', 'MultipleDelimsAsOne', 1); 
 tmp = tmp{1};
 t = str2num(tmp{1});
 x = str2num(tmp{2});

where you initialize tline as before.

[kk1991]

Thank you! :)