title: How do I use the Tensorboard callback of Keras?
body: <p>I have built a neural network with Keras. I would visualize its data by Tensorboard, therefore I have utilized:</p>
  
  <pre class="lang-py prettyprint-override"><code>keras.callbacks.TensorBoard(log_dir='/Graph', histogram_freq=0,
                              write_graph=True, write_images=True)
  </code></pre>
  
  <p>as explained in <a href="https://keras.io/callbacks/#tensorboard" rel="noreferrer">keras.io</a>. When I run the callback I get <code>&lt;keras.callbacks.TensorBoard at 0x7f9abb3898&gt;</code>, but I don't get any file in my folder "Graph". Is there something wrong in how I have used this callback?</p>