title: Unable to change the tick frequency on my chart
body: <p>I have seen many questions on changing the tick frequency on SO, and that did help when I am building a line chart, but I have been struggling when its a bar chart. So below are my codes</p>
  <pre><code>import numpy as np
  import matplotlib.pyplot as plt
  import pandas as pd
  
  df = pd.DataFrame(np.random.randint(1,10,(90,1)),columns=['Values'])
  df.plot(kind='bar')
  plt.show()
  </code></pre>
  <p>and thats the output I see. How do I change the tick frequency ?</p>
  <p>(To be more clearer frequency of 5 on x axis!)</p>
  <p><a href="https://i.stack.imgur.com/yBgcz.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/yBgcz.png" alt="enter image description here" /></a></p>