Datesbetween for multiple conditions

[DBNN]

Hi,  

I have a set of conditions that occur at certain dates.   I am looking for an easy way to count the number of days between the occurences and then calculate the standard deviation of all these times in between.  My table is simple but I can not find the right way to do this with a measure

Condition	Date
1	10-Mar
2	15-Mar
3	27-Mar
1	14-Mar
2	16-Mar
3	31-Mar
2	20-Mar
3	2-Apr
1	20-Mar

[AlB · Accepted solution]

Hi @DBNN 

1. Place Table1[Condition] in a table visual

2. Place this measure in the visual

Measure = 
STDEVX.P(
    ADDCOLUMNS (
        DISTINCT ( Table1[Date] ),
        "@DaysBetween",
            VAR current_ = Table1[Date]
            VAR next_ = CALCULATE ( MIN ( Table1[Date] ), Table1[Date] > current_ )
            RETURN
                IF ( NOT ISBLANK ( next_ ), next_ - current_ )
    ),
    [@DaysBetween]
)

See it all at work in the attached file.

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