Find number of quarters selected in a nested calendar slicer

[senthilvaithi]

I have a use case where I need to display sales figures across several years. The interested years are selected in a calendar slicer. Calendar slicer has Years, and Quarters.

This allows users to compare current yr vs last yr vs 5 years ago vs 10 yrs and so forth or compare sales with last 5 years. The curve ball scenario for me, the user can select just couple of quarters for a year, in that case annualize the sales number for that year, and use that in the visual. How do I figure that all 4 quarters for a given year, or just two quarters are selected?

My visual will look something similar to:

Here only 2024 is annualized, but any year could have a partially selected period that needs to be annualized. 

How do I figure that all 4 quarters for a given year, or just two quarters are selected? Based on this I will apply the annualization logic.

[Greg_Deckler · Accepted solution]

@senthilvaithi If in a Year context you could do something like this assuming you have a Quarter column:

Measure = COUNTROWS( DISTINCT('Calendar'[Quarter]) )