title: Why can't I load text files in GNU Octave?
body: <p>The following code lines were written by my instructor. Those seemed to be working well in his PC.</p>
  
  <p>But, I couldn't load files as he did in the lab.</p>
  
  <pre><code>load iris2.txt
  iris2(:,1)=2;
  load iris3.txt
  iris3(:,1)=3;
  
  ts=iris(48:53, :);
  
  for i=1:rows(ts)
      clslnn(ts, ts(i, 2:end)+0.3)
  end
  </code></pre>
  
  <p>I tried this in my pc as well,</p>
  
  <pre><code>&gt;&gt; load train.txt
  error: load: unable to determine file format of 'train.txt'
  &gt;&gt; load 'train.txt'
  error: load: unable to determine file format of 'train.txt'
  &gt;&gt;
  </code></pre>
  
  <p>So, what could be the issue here?</p>