>> doc textscan
and use the parameter HeaderLines to skip the header. Supposing that you have 7 header lines and that you need columns 1 and 3 (discarding the rest of each line), you should have something like:
content = fileread( 'myData.txt' ) ;
data = textscan( content, '%f%*f%f%*[^\n]', 'HeaderLines', 7, ...
'CollectOutput', true ) ;
data = data{1} ;
where you see a * in the formatSpec argument to skip column 2 and %*[^\n] at the end to skip the rest of the line.
