I have a capacity/usage data set and am trying to show the monthly usage in a chart while also showing the delta alongside it. I tried above() (and before () in pivot) and that works nicely until I make a selection of one or more months, especially disjointed months.
I then tried using set analysis to try to set the MonYr field to the previous month like so:
Sum({<MonYr = {$(=AddMonths(MonYr,-1))} >} USAGE)
but it always returns the current month's usage, I'm guessing because it can't ignore the MonYr dimension for that row. I even tried Sum({1<MonYr = {$(=AddMonths(MonYr,-1))} >} USAGE), but no dice.
I'm sure this has been done before. Can someone please help? I need it to be dynamic so that filters can be applied and the values are recalculated accordingly.
