Forum Discussion

George1973's avatar
George1973
Icon for Helper V rankHelper V
4 years ago
Solved

Mode mesaure for Virtual Table

Hi, I'm trying to create a MODE measure and apply to a given virtual table given below: VAR VrtTable= UNION( ROW("VrtValue",[Product Count]), ROW("VrtValue",[-1M]), ROW("VrtValue",[-2M]), ROW("Vrt...
  • OwenAuger's avatar
    OwenAuger
    4 years ago

    Sure, just saw your update 🙂

     

    I would then lump the two conditions (nonblank [VrtValue] and [Frequency] > 1 ) into a FILTER around GROUPBY:

    VAR VrtTable =
    UNION (
        ROW ( "VrtValue",[Product Count]),
        ROW ( "VrtValue", [-1M] ),
        ROW ( "VrtValue", [-2M] ),
        ROW ( "VrtValue", [-3M] ),
        ROW ( "VrtValue", [-4M] ),
        ROW ( "VrtValue", [-5M] )
    )
VAR ValueFrequency =
    FILTER (
        GROUPBY ( VrtTable, [VrtValue], "Frequency", SUMX ( CURRENTGROUP (), 1 ) ),
        NOT ISBLANK ( [VrtValue] ) && [Frequency] > 1
    )
VAR Mode =
    -- MINX returns the smallest value in case of ties
    MINX ( TOPN ( 1, ValueFrequency, [Frequency] ), [VrtValue] )
RETURN
    Mode

    Regards,

    Owen

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

Hi George1973 

We can use GROUPBY to handle grouping of the virtual table:

VAR VrtTable =
    UNION (
        ROW ( "VrtValue",[Product Count]),
        ROW ( "VrtValue", [-1M] ),
        ROW ( "VrtValue", [-2M] ),
        ROW ( "VrtValue", [-3M] ),
        ROW ( "VrtValue", [-4M] ),
        ROW ( "VrtValue", [-5M] )
    )
VAR ValueFrequency =
    GROUPBY ( VrtTable, [VrtValue], "Frequency", SUMX ( CURRENTGROUP (), 1 ) )
VAR Mode =
    -- MINX returns the smallest value in case of ties
    MINX ( TOPN ( 1, ValueFrequency, [Frequency] ), [VrtValue] )
RETURN
    Mode

Does this work as expected?

Regards,

Owen

  • George1973's avatar
    George1973
    Icon for Helper V rankHelper V
    4 years ago

    Dear Owen,
    The solution you've provided works almost perfectly. Just one criteria is needed:
    Somehow we need to generate the MODE result only if FREQUENCY is MORE than ONE.

     

     

    As you can see - The mode result is right when the frequency is more than one. So, Where should I put thia criteria, please advise.

    Thanks in advance,

     

    • George1973's avatar
      George1973
      Icon for Helper V rankHelper V
      4 years ago

      ..And one more thing - The grouping should ignore BLANK values. As given below:

      The mode of that highlighted group should give 2400 as the Mode result. Now it's blank.

       

      • OwenAuger's avatar
        OwenAuger
        Icon for Super User rankSuper User
        4 years ago

        Sure, just saw your update 🙂

         

        I would then lump the two conditions (nonblank [VrtValue] and [Frequency] > 1 ) into a FILTER around GROUPBY:

        VAR VrtTable =
    UNION (
        ROW ( "VrtValue",[Product Count]),
        ROW ( "VrtValue", [-1M] ),
        ROW ( "VrtValue", [-2M] ),
        ROW ( "VrtValue", [-3M] ),
        ROW ( "VrtValue", [-4M] ),
        ROW ( "VrtValue", [-5M] )
    )
VAR ValueFrequency =
    FILTER (
        GROUPBY ( VrtTable, [VrtValue], "Frequency", SUMX ( CURRENTGROUP (), 1 ) ),
        NOT ISBLANK ( [VrtValue] ) && [Frequency] > 1
    )
VAR Mode =
    -- MINX returns the smallest value in case of ties
    MINX ( TOPN ( 1, ValueFrequency, [Frequency] ), [VrtValue] )
RETURN
    Mode

        Regards,

        Owen

    • OwenAuger's avatar
      OwenAuger
      Icon for Super User rankSuper User
      4 years ago

      That's great 🙂

      In order to exclude cases where max Frequency = 1,

       

      There are a few ways you could handle this. Here's one that applies a condition near the end to exclude cases where the max Frequency = 1./

      VAR VrtTable =
    UNION (
        ROW ( "VrtValue",[Product Count]),
        ROW ( "VrtValue", [-1M] ),
        ROW ( "VrtValue", [-2M] ),
        ROW ( "VrtValue", [-3M] ),
        ROW ( "VrtValue", [-4M] ),
        ROW ( "VrtValue", [-5M] )
    )
VAR ValueFrequency =
    GROUPBY ( VrtTable, [VrtValue], "Frequency", SUMX ( CURRENTGROUP (), 1 ) )
VAR Mode =
    -- MINX returns the smallest value in case of ties
    MINX (
        TOPN ( 1, ValueFrequency, [Frequency] ),
        IF ( [Frequency] > 1, [VrtValue] )
    )
RETURN
    Mode

      Regards,

      Owen