March 2018
Beginner to intermediate
638 pages
16h 29m
English
Content preview from Mastering Microsoft Power BI
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Rolling periods
Rolling period and trailing average measures are also very common in datasets, as they help to smooth out individual outliers and analyze longer-term trends. For example, a significant business event or variance 10 months ago will have a relatively small impact on a trailing 12 month total. Additionally, this variance will not impact trailing 30 day or 3, 6, and 9-month rolling period measures.
The following two measures capture the trailing 60 days of sales history and the 60 days of history prior to the trailing 60 days:
Internet Net Sales (Trailing 60 Days) = VAR MaxDate = MAX('Date'[Date])VAR StartDate = MaxDate - 59RETURNCALCULATE([Internet Net Sales],FILTER(ALL('Date'),'Date'[Date] >= StartDate && 'Date'[Date] <= MaxDate)) ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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