MATLAB: How to read only the first term on the file.

.dat

Hi, I would know if someone can help me with this. In the file I have, I only need to read te first term of the second column, I mean, the total_x number. Anyone know how can I do that?
Thanks

Best Answer

Try this
%%

ffs = 'h:\m\cssm\force.dat'; % change to your folder

fid = fopen( ffs, 'r' );
cac = textscan( fid, '%*f%s%*s%*s', 1, 'Headerlines',4, 'Delimiter','\t' ); 
fclose( fid );
total_x = sscanf( cac{1}{1}, '(%f %*f %*f)' );
and display the value
>> total_x
total_x =
     -0.17812
In response to comment
Try this instead
%%
ffs = 'h:\m\cssm\force.dat'; % change to your folder
fid = fopen( ffs, 'r' );
cac = textscan( fid, '%*f%s%*s%*s', inf, 'Headerlines',4, 'Delimiter','\t' ); 
fclose( fid );
total_x = cellfun( @(chr) sscanf(chr,'(%f %*f %*f)'), cac{1} );
and check the result
>> whos total_x
  Name              Size              Bytes  Class     Attributes
  total_x      190978x1             1527824  double
Related Question