title: Change Histogram Tick Size
body: <p>I am plotting a dataframe of ratio values where the values lie between -0.2 and 0.4. To plot the histogram I am simply using </p>
  
  <pre><code>sheet = pd.read_csv('Spread_Ratio.csv') #read excel sheet containing values
  df = sheet['Ratio'] #where the 'Ratio' col is just values between -0.2 and 0.4
  df.hist()
  plt.show()
  </code></pre>
  
  <p>which returns the following histogram. </p>
  
  <p><img src="https://i.stack.imgur.com/1AO3t.png" alt="Histogram"></p>
  
  <ul>
  <li>Here my x axis is incrementing in ticks of 0.1, but I would like to see the data using 0.01 tick size across the xaxis. What do I need to alter in order to switch this?</li>
  </ul>