Forum Discussion

maart666's avatar
maart666
Helper I
5 years ago
Solved

Subtract values from two rows in matrix

Hello,   Every week I get sales forecasts for which I have to compare the values. Sample model here:                                               PBI file  ...
Need Help
  • v-kelly-msft's avatar
    v-kelly-msft
    5 years ago

    Hi  maart666 ,

     

    Modify your measure as below:

    Difference = 
VAR thisforecastnum =
    MIN ( Arkusz1[Forecast no] )
VAR thisforecast =
    SUM ( Arkusz1[Qty] )
var lastforecastnum=CALCULATE(MAX('Arkusz1'[Forecast no]),FILTER(ALLSELECTED(Arkusz1),'Arkusz1'[Forecast no]<MAX('Arkusz1'[Forecast no])))
VAR lastforecast =
    CALCULATE (
        SUM ( Arkusz1[Qty] ),
        Arkusz1[Forecast no] = lastforecastnum
    )
RETURN
    IF (
        ISBLANK ( lastforecast ),
        BLANK (),
        thisforecast - lastforecast
    )

     

    And you will see:

     

    For the related .pbix file,pls see attached.

     

    Best Regards,
    Kelly

    Did I answer your question? Mark my post as a solution!

maart666's avatar
maart666
Helper I
5 years ago

Thank you Pat!

It works perfectly when I compare data from subsequent forecasts. But if the forecasts are not consecutive e.g. 1 and 3 (I know I should mentioned this) the values are incorrect:

 

 


Could you help solve this problem?

Thank you.

Marcin

v-kelly-msft's avatar
v-kelly-msft
Community Support
5 years ago

Hi  maart666 ,

 

Modify your measure as below:

Difference = 
VAR thisforecastnum =
    MIN ( Arkusz1[Forecast no] )
VAR thisforecast =
    SUM ( Arkusz1[Qty] )
var lastforecastnum=CALCULATE(MAX('Arkusz1'[Forecast no]),FILTER(ALLSELECTED(Arkusz1),'Arkusz1'[Forecast no]<MAX('Arkusz1'[Forecast no])))
VAR lastforecast =
    CALCULATE (
        SUM ( Arkusz1[Qty] ),
        Arkusz1[Forecast no] = lastforecastnum
    )
RETURN
    IF (
        ISBLANK ( lastforecast ),
        BLANK (),
        thisforecast - lastforecast
    )

 

And you will see:

 

For the related .pbix file,pls see attached.

 

Best Regards,
Kelly

Did I answer your question? Mark my post as a solution!