title: ValueError: could not convert string to float: '62,6'
body: <p>I am trying to convert dataframe to numpy array:</p>
  
  <pre><code>dataset = myset.values
  X = np.array(dataset[0:,6:68], dtype="float32")
  X[0:5,0:]
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/970OB.png" rel="nofollow noreferrer">Here is a piece of the data</a></p>
  
  <p>Here is an error:</p>
  
  <pre><code>-----------------------------------------------------------------------
  
  ----
  ValueError                                Traceback (most recent call last)
  &lt;ipython-input-162-4b67608047d1&gt; in &lt;module&gt;()
        1 dataset = myset.values
  ----&gt; 2 X = np.array(dataset[0:,6:68], dtype="float32")
        3 X[0:5,0:]
  
  ValueError: could not convert string to float: '62,6'
  </code></pre>
  
  <p>Where is a problem?</p>