title: How to generate bivariate data of different shapes (e.g., square, circle, rectangle) with outliers?
body: <p>I am currently looking for some tool that would generate datasets of different shapes like square, circle, rectangle, etc. with outliers for cluster analysis. </p>
  
  <p>Can any one of you recommend a good dataset generator for cluster analysis? 
  Is there anyway to generates such datasets in languages like R?</p>