How to draw graph using core graphics
<p>I'd like to be able to draw a graph using just the Apple Framework.</p>

<p><img src="http://i.stack.imgur.com/hWWAX.png" alt="enter image description here"> </p>

<p>Is this possible using just CoreGraphics, or do I need to use any other framework?</p>

<p>I don't want to use any third party framework for drawing the graph.</p>
