Forum Discussion
DAX to show Value changes
Hi,
I am working on window panels and they are going to be inspected for the forseeable future based on their Priority levels. I want to show in a calcualted column or measure, the window panels that have changed priority after each inspection. Either up or down.
I cannot figure out how to do it.
HELP 😃
| Panel No | Priority | Date Created | Date of Inspection |
| 1289 | P3 | 04/11/2020 | 04/11/2020 |
| 1345 | P2 | 04/11/2020 | 05/05/2021 |
| 1289 | P1 | 04/11/2020 | 06/07/2021 |
| 5000 | P2 | 12/10/2020 | 01/02/2021 |
| 5000 | P1 | 12/10/2020 | 12/12/2020 |
| 5000 | P2 | 12/10/2020 | 12/04/2020 |
Anonymous This worked for me with your data:
Column = VAR __Current = RIGHT([Priority],1) * 1 VAR __PreviousDate = MAXX(FILTER('Table3','Table3'[Date of Inspection] < EARLIER('Table3'[Date of Inspection]) && [Panel No]=EARLIER('Table3'[Panel No])),[Date of Inspection]) VAR __Previous = RIGHT(MAXX(FILTER('Table3',[Date of Inspection]=__PreviousDate),[Priority]),1) * 1 RETURN IF(ISBLANK(__PreviousDate),0,__Current - __Previous) * -1
3 Replies
- Greg_Deckler
Community Champion
Anonymous You are going to want something along the lines of MTBF to compare rows:
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 - __PreviousGreg_Deckler Thanks for this, unfortunately it is not producing the solution I am looking for/expecting.
I will give an example of what I was hoping to see.
Panel No Priority Date Created Date of Inspection Priority change 1289 P3 04/11/2020 04/11/2020 0 1345 P2 04/11/2020 05/05/2021 0 1289 P1 04/11/2020 06/07/2021 2 5000 P2 12/10/2020 01/02/2021 -1 5000 P1 12/10/2020 12/12/2020 1 5000 P2 12/10/2020 12/04/2020 0 I don't if that makes sense? The formula above is showing me the difference from the previous panel in the the row above...not the difference JUST for that panel.
- Greg_Deckler
Anonymous This worked for me with your data:
Column = VAR __Current = RIGHT([Priority],1) * 1 VAR __PreviousDate = MAXX(FILTER('Table3','Table3'[Date of Inspection] < EARLIER('Table3'[Date of Inspection]) && [Panel No]=EARLIER('Table3'[Panel No])),[Date of Inspection]) VAR __Previous = RIGHT(MAXX(FILTER('Table3',[Date of Inspection]=__PreviousDate),[Priority]),1) * 1 RETURN IF(ISBLANK(__PreviousDate),0,__Current - __Previous) * -1