I asked this question before but I thought I'd rephrase because I had zero responses.
I want to do what's in this video http://www.youtube.com/watch?v=gWa89GWG_K8&feature=channel I want to do what he does at 5:30, which is click and drag and select an area on a graph. I'm thinking I could just draw some expanding rectangle then transfer my point to a data point. Not sure though. thanks!
