title: How to show single dot if there is only one value in scatter plot using core plot
body: <p>I am using scatter plot to draw the graph and it is working fine when data source array count is greater then one.</p>
  
  <p>But when data source array count is 1 then it is not showing anything. My requirement is to show a dot when data count is 1. </p>
  
  <p>How can I achieve it?</p>