title: Android aChartEngine XY Chart
body: <p>I'm using aChartEngine's 0.7.0 charting library for Android. I have a working XY chart that changes dynamically about every second when new data is received.  However, it draws the line chart from left to right and eventually moves out of view. The only way to see the new data being drawn is to scroll the chart view to the right. </p>
  
  <p>Does anyone know how to make the line draw new data on the left side so that older data eventually scrolls right out of view. Basically, reversing the direction of the chart line?</p>