Flag max per category

[bo_afk]

I currently have a column which flags the latest week number in the table using the formula below. 

Max WeekNumber flag = IF(TABLENAME[WeekNumber] = MAXA(TABLENAME[WeekNumber]),1,0)

If the week number is equal to the max week number of the data, then assign the value 1, else 0. I have another column in my data for year but the latest week number for 2020 is 53 but for 2019 its 52.

How can I flag the latest week number for each year? 

[amitchandak · Accepted solution]

@bo_afk , Try a new column like

Max WeekNumber flag = IF(TABLENAME[WeekNumber] = MAXX(filter(TABLENAME,[Year] = earlier([year])),[WeekNumber]),1,0)