title: Adjusting dot size in scatterplot
body: <p>I am doing</p>
  
  <pre><code>ax = df.plot(x=x_col, y=y_col, style=['o', 'rx'])
  </code></pre>
  
  <p>but I don't like that the data points are large circles. I have thousands of datapoints, so it makes the plot ugly. Any idea how I can make the dots smaller, i.e. have them be actual points, rather than circles? Or any alternative suggestions for this sort of scatterplot?</p>