title: how to rotate a pie chart clockwise and anti-clockwise as in roambi app in iphone sdk
body: <p>I had drawn the pie chart using core plot library. But the thing is I want to rotate the pie chart in clock wise and anti clockwise direction as in Roambi application.</p>
  
  <p>Can anyone suggest me how can I do like this.</p>
  
  <p>Anyone's help will be deeply appreciated.</p>
  
  <p>Thank's all,
  Monish.</p>