Solved: Re: Average Days Between Inspections - Page 2

BotBot1 · ‎02-22-2023

Hi,

I am trying to get the average days between inspection dates. Below is a breakdown of current dates by project (with blue and green dots being 2 different projects).

Below is my attempted DAX for getting the days between inspections, with an average calculation for averages later on:

DaysBetweenInspectionsALL = 
VAR CurrentProject = SELECTEDVALUE(Project[ProjectName])
VAR CurrentDate = SELECTEDVALUE('Date of Inspection'[date])
VAR LastInspectionDate = 
    CALCULATE(
    MAX('Date'[Date]),
    FILTER(
        ALL(Project),
        Project[ProjectName] = CurrentProject &&
        SELECTEDVALUE('Date of Inspection'[date]) < CurrentDate))
RETURN 
IF(LastInspectionDate = BLANK(), BLANK(), CurrentDate - LastInspectionDate)

However, this has returned all row values as '27/12/1774', even with whole number formatting. I belive this might be from using an incorrect field in the LastInspectionDate variable. Any help would be appreciated, thank you.

tamerj1 · ‎02-23-2023

@BotBot1
Please try

AverageDaysBetweenInspections =
AVERAGEX (
    SUMMARIZE ( 'HSE Inspection', Project[ProjectName], 'Date of Inspection'[date] ),
    VAR CurrentDate = 'Date of Inspection'[date]
    VAR CurrentProjectTable =
        CALCULATETABLE (
            SUMMARIZE ( 'HSE Inspection', Project[ProjectName], 'Date of Inspection'[date] ),
            ALL ( 'Date of Inspection'[date] )
        )
    VAR TableBefore =
        FILTER ( CurrentProjectTable, 'Date of Inspection'[date] < CurrentDate )
    VAR PreviousDate =
        MAXX ( TableBefore, 'Date of Inspection'[date] )
    RETURN
        IF ( NOT ISEMPTY ( TableBefore ), INT ( CurrentDate - PreviousDate ) )
)

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