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Anonymous's avatar
Anonymous
Not applicable
2 years ago
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Difference between Rows of same Value Column for same ID using DAX

Hi, I'm struggling to transform the dataset below. So basically I want to Calculate the difference group by ID For instance:  Take the original value and subtract the value by the latest Modifi...
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Greg_Deckler's avatar
Greg_Deckler
Community Champion
2 years ago

Anonymous See my article on Mean Time Between Failure (MTBF) which uses EARLIER: http://community.powerbi.com/t5/Community-Blog/Mean-Time-Between-Failure-MTBF-and-Power-BI/ba-p/339586.
The basic pattern is:
Column = 
  VAR __Current = [Value]
  VAR __PreviousDate = MAXX(FILTER('Table','Table'[Date] < EARLIER('Table'[Date])),[Date])

  VAR __Previous = MAXX(FILTER('Table',[Date]=__PreviousDate),[Value])
RETURN
  __Current - __Previous