title: Scatter plot of two categorical variables
body: <p>I have two categorical variables, which I would like to plot against each other.</p>
  
  <p>This is a dummy example of my data:</p>
  
  <pre><code>dummyData &lt;- as.factor(c(rep("fav", 10), rep("int",30)))
  dummyMethod1 &lt;- sample(dummyData)
  dummyMethod2 &lt;- sample(dummyData)
  </code></pre>
  
  <p>Here is how I tried to plot it:</p>
  
  <pre><code>plot(dummyMethod1, dummyMethod2)
  </code></pre>
  
  <p>This gives a bar plot, which is okay, but one cannot see how many data points there were in each category.</p>
  
  <p>or:</p>
  
  <pre><code>ggplot(data = data.frame(dummyMethod1, dummyMethod2),
         aes(x = dummyMethod1, y = dummyMethod2)) + 
    geom_point(position = position_dodge(width = 0.4))
  </code></pre>
  
  <p>This makes a scatter plot, which also doesn't give any information about the number of data point in each category.</p>
  
  <p>Is there any way to make a scatter plot of <code>dummyMethod1</code> vs <code>dummyMethod2</code> so that I can see each individual data point in each category?</p>