Spotfire折线图平滑

Question

Download my .dxp dashboard here .

I have a line chart in Spotfire. On the x-axis is date and the y-axis is an amount. Specifically, it's the weighted average of a minimum amount for each date on x-axis. The y-axis expression is

WeightedAverage(
                [NUMERIC_1] , 
                 Min([NUMERIC_2]) over (Intersect([CAT_1],[CAT_2],[CAT_3]))
                )

The line is very jumpy so I'd like to smooth it. I thought of using the moving average expression, perhaps using a 7-day moving average. However, I'm not sure how to nest my WeightedAverage function (shown above) in the MovingAverage function because that's also a compound function.

Any ideas on how to smooth my line chart?

Answer 1

The following is a solution:

WeightedAverage([Weighting Factor],Min([NUMERIC_1]) over (Intersect([CAT_1],[CAT_2],[DATE_1]))) 
THEN Avg([Value]) OVER (LastPeriods(10,[Axis.X]))
THEN If(Count() OVER (LastPeriods(10,[Axis.X]))=10,[Value],null)