title: Barpots of item categories in pandas
body: <p>I'm new to pandas and not sure how to draw a bar plot of each category (6, 7) showing proportion (percentage) of "Wet" to other states in the following data frame:</p>
  
  <pre><code>Mine    Category    State
  X23 6   Wet
  M34 7   Wet
  K28 7   Dry
  U56 7   Swampy
  S90 6   Wet
  E35 7   Dry
  X67 6   Wet
  </code></pre>
  
  <p>My effort so far:</p>
  
  <pre><code>sub =df.groupby(['Category','State==Wet'].sum()
  sub.plot(kind='bar')
  </code></pre>
  
  <p>Can someone help please? Thanks</p>
  
  <p>EDIT: This is the dataframe output to be plotted</p>
  
  <pre><code>Category    Percent “wet”   Percent “non wet”
  6   3/3 (100%)  0/3 (0%)
  7   1/4 ¾ ( 75 %)
  </code></pre>
  
  <p>So 6 and 7 on x-axis, then wet and non-wet stacked in each of bar(6) and bar(7).</p>