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VBLOT's avatar
VBLOT
Icon for Helper I rankHelper I
2 years ago
Solved

Ranking with multiple rows and drilldown

Hello all,   I tried for many hours and differents ways but I can't manage to rank my matrix. I have two lines in my Matrix :   As you can see in the screen bellow, I want to rank REF (h...
  • OwenAuger's avatar
    OwenAuger
    2 years ago

    Hi again VBLOT 

    Thanks so much for the file! That made it a lot easier to debug.

     

    It seems that the problem actually relates to how the visual level filter "Sum of Nb samples collected > 0" interacts with the ALLSELECTED () modifier used to produce the table for ranking.

     

    A safer way to write the measure is below (see attached PBIX). Actually in their Whitepaper, SQLBI recommend this general approach of adding column(s) to the "relation" argument of window functions.

    I might have to get back to you with an explanation of why it works when I've analyzed further.

    Rank FIX = 
VAR IsLineInScope = ISINSCOPE ( 'Invoices List'[Line Designation] )
VAR IsREFInScope = ISINSCOPE ( 'Invoices List'[REF] )
VAR Result =
    SWITCH (
        TRUE ( ),
        IsLineInScope && IsREFInScope,
            RANK (
                DENSE,
                CALCULATETABLE (
                    ADDCOLUMNS (
                        SUMMARIZE (
                            'Invoices List',
                            'Invoices List'[Line Designation],
                            'Invoices List'[REF]
                        ),
                        "@TotalSamples", [Total Samples collected]
                    ),
                    ALLSELECTED ()
                ),
                ORDERBY ( [@TotalSamples], DESC ), ,
                PARTITIONBY('Invoices List'[REF])
               
            ),
        NOT IsLineInScope && IsREFInScope,
            RANK (
                DENSE,
                CALCULATETABLE (
                    ADDCOLUMNS (
                        SUMMARIZE ( 'Invoices List', 'Invoices List'[REF] ),
                        "@TotalSamples", [Total Samples collected]
                    ),
                    ALLSELECTED ( )
                ),
                ORDERBY ( [@TotalSamples], DESC )
            )
    )
RETURN
    Result

     

    Regards

OwenAuger's avatar
OwenAuger
Icon for Super User rankSuper User
2 years ago

Hi VBLOT 

Your logic is essentially correct!

In fact your measure works fine in a test PBIX I created, as long as [Total Samples Collected] always has positive values (example in attached PBIX).

However, since it wasn't working correctly for you, it's possible that there is a complication in your model. Are there any sort-by columns defined by any chance?

 

A more robust way I would suggest writing this measure is using the RANK function, since we can specify partitioning.

Rank = 
VAR IsLineInScope =
    ISINSCOPE ( 'Invoices List'[Line Designation] )
VAR IsREFInScope = ISINSCOPE ( 'Invoices List'[REF] )
VAR Result =
    SWITCH (
        TRUE ( ),
        IsLineInScope && IsREFInScope,
            RANK (
                DENSE,
                CALCULATETABLE (
                    SUMMARIZE (
                        'Invoices List',
                        'Invoices List'[Line Designation],
                        'Invoices List'[REF]
                    ),
                    ALLSELECTED ( )
                ),
                ORDERBY ( [Total Samples Collected], DESC ),
                PARTITIONBY ( 'Invoices List'[REF] )
            ),
        NOT IsLineInScope && IsREFInScope,
            RANK (
                DENSE,
                CALCULATETABLE (
                    SUMMARIZE ( 'Invoices List', 'Invoices List'[REF] ),
                    ALLSELECTED ( )
                ),
                ORDERBY ( [Total Samples Collected], DESC )
            )
    )
RETURN
    Result

 

PBIX attached for reference

  • Rank Original is your posted measure.
  • Rank is updated measures.

 

Regards

  • VBLOT's avatar
    VBLOT
    Icon for Helper I rankHelper I
    2 years ago

    Hello OwenAuger !

     

    Thanks for your answer ! It is indeed working in the PBI you linked but sadly it doesn't work on mine.

     

    I've checked and I don't have any sort-by columns in Invoices List, the code in entering conditions as expected but somehow, the rank part in the REF scope isn't working and I still have 1 everywhere...

    I also know that I have blanks in my Nb samples collected. But it shouldn't have any impacts as I filtered the result to have only those greater than 0 and in my Total Samples collected measure, I make sure that I don't consider BLANK().

    Total Samples collected = 
    CALCULATE(
        SUM('Invoices List'[Nb samples collected]),
        FILTER('Invoices List','Invoices List'[Nb samples collected] <> BLANK())
    )

    Do you have another idea ?