Calculating Average for a different time span changing dynamically

[Clausbert]

Hi guys,

 I searched the internet but couldn't find an answer to this question. I hope it's easier than I think as I am fairly new to PBI.

My target is to have a 3 week-, 6 week- and 13 week average of my data. However the twist is, that the time span I am looking at is changing.

When I have the current week I get the correct result, as I am calculating the time span with the Today function minus the 13 weeks.

My problem starts, when I use the week slider:

You see, that I don't have any calculation for w-3 and 2-6 and on top don't have a w-13 calculation for w-13 but only for the remaining weeks that get shown as the count still starts at week 47.

Long story short. Any super brain here to help me out?

Thanks a lot!

[lbendlin · Accepted solution]

The right end of your slicer marks the maximum of your filter context.  So instead of using "today" as the right basis, use MAX(Wochenslicer) and then do the shifts as needed from that point.