Ely has a blog post on this: http://www.quietlyscheming.com/blog/charts/easy-custom-charts/
I think the short answer in Flex 3 is that you should be able to create an annotationElement that's a CartesianDataCanvas and draw directly on that. Mark ________________________________ From: flexcoders@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Sean Sent: Monday, March 24, 2008 3:18 PM To: flexcoders@yahoogroups.com Subject: [flexcoders] Drawing on top of charts Hi All, I have a Flex application which uses Line charts from the Flex chart package. I'd like to be able to draw a vertical line on the whole chart when the user clicks down on the mouse and draw another vertical line at the X location when he releases the mouse. I can't yet work out how to do this, I looked at the CartesianDataCanvas class, but it seems to work only in terms of data coordinates, not raw mouse coordinates. Thanks to responders if any, Sean
