title: Using libsvm format in scikit
body: <p>I'm very new to all these tools. I have been using libsvm and wanted to use scikit. But all of my inputs are in libsvm format. Something like this</p>
  
  <pre><code> +1 1:1 36:1
   +1 1:1 11:1 25:1 36:1
  </code></pre>
  
  <p>I used the load_svmlight_files function to load, after loading my loaded training data looks like this
           (1, 0)      1.0
           (1, 35)     1.0
           (2, 0)      1.0
           (2, 10)     1.0
           (2, 24)     1.0
           (2, 35)     1.0</p>
  
  <p>But when i try to use the pylab scatter it returning </p>
  
  <pre><code>   ValueError: setting an array element with a sequence.
  </code></pre>
  
  <p>How can i change my data into the scikit two dimensional array?</p>