I'm playing about with PowerView at the moment and have run into a slight issue. I've got a line chart (below) but would really like to sort the legend (Keyword) depending on the latest value of the data point in the chart (currently sorts alphabetically).
Is this possible either a) within PowerView itself or b) by adding some sort of calculated column to the series table via DAX and defining that as the sort column in the underlying PowerPivot model?