This is a continuation of another post that apparently is no longer active (http://community.tableau.com/thread/130011)
I want to create a previous 3 mth avg reference line (just like the previous month avg ref line). I don't think the LOOKUP can be used any more so I was trying the WINDOW_AVG(SUM(Sales),-3,0) but I can't figure out how to make it compute along the months instead of the days. Thanks
Message was edited by: .Yann Treguier
Joshua, Jonathan, Jo Mako...anyone able to help with this?