title: Extract individual columns from an array in IDL
body: <p>I'm working with SDSS spectra, I read a fits file using <code>mrdfits</code>, it says the data is stored in <code>8 columns and 3838 rows</code> which is the correct dimension of the data.  </p>
  
  <p>But when I seek out a specific column using <code>print spec[0,1]</code> it returns an error of <code>out of bound</code>. If I use <code>print spec[0*1]</code> it gives an output of  </p>
  
  <p><code>{11.7020      3.58080      0.0990829    0       0      1.49589      15.6233      10.8985}</code>  </p>
  
  <p>Which I think is one element and not 8. How can i separate these columns into individual ones from this array? </p>