Need help reset count

[Anonymous]

Hi All,

I've tried to calculate the total infected and recovered users every month, the total recovered doesn't matter but the total infected when the same users are infected again after recovery the calculation doesn't work.

My table:

This is my DAX for it: 

CountInfected =

VAR CountIf = CALCULATE(DISTINCTCOUNT(Summary[User]),Summary[Infected]=1)

VAR CountRec = CALCULATE(DISTINCTCOUNT(Summary[User]),Summary[Recovered]=1)

RETURN

IF(CountIf=CountRec,0,CountIf-CountRec)

I would like Total Infected is 1 not 0

Many thanks if any of you can help me!

[parry2k]

@AlexisOlson got it. I missed that. Thanks for pointing that out.

@Anonymous Here is a measure.

Total Infected = 
VAR __table = TOPN ( 1, ALLSELECTED ( 'Table' ), CALCULATE ( MAX ( 'Table'[Date] ), VALUES ( 'Table'[User] ) ), DESC )
VAR __totalInfected = 
CALCULATE ( 
    SUM ( 'Table'[Infected] ), 
    KEEPFILTERS ( __table )
) -
CALCULATE (
    SUM ( 'Table'[Recovered] ),
    KEEPFILTERS ( __table )
)
RETURN IF ( __totalInfected  > 0, __totalInfected )
   

[Anonymous]

It works as required. Great Support. Thanks, @parry2k 

[AlexisOlson · Accepted solution]

I'd recommend looking at whatever the last status was.

Try something like this:

CountInfected =
VAR LastStatusDates =
    ADDCOLUMNS (
        VALUES ( Summary[User] ),
        "@LastStatusDate", CALCULATE ( MAX ( Summary[Date] ) )
    )
RETURN
    SUMX (
        LastStatusDates,
        LOOKUPVALUE (
            Summary[Infected],
            Summary[User], Summary[User],
            Summary[Date], [@LastStatusDate]
        )
    )

[Anonymous]

Perfect, It works as required too in different ways. Great Support. Thanks @AlexisOlson 

[parry2k]

@Anonymous based on the data seems like everyone is recovered, how you expected answer to be 1

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[AlexisOlson]

A is reinfected in the last row.