how to get variance of selected measures from the slicers

[Bilhan]

Hey guys

Really want to explain straight - i have a slicer you can multi-select existing measures 
suppose slicer is
* measure1 
* measure2
* measure3 

table shows how many measure is selected. Works fine ! 

user wants to see select two measures, and bring me those two measure's difference
suppose selected measures
* measure1
* measure2

expected view in the columns
measure1 | measure2 | (measure1-measure2) |

       5        |        3        |                  2               |
and records below..

please any ideas?
thanks!
 

[Bilhan]

@v-rzhou-msft 
it works perfect except once you select three values it's calculation three of them and we don't want that
 5| 3| 6 = -1 which I couldn't even find summarizing out of {5,3,6} 

[v-rzhou-msft · Accepted solution]

Hi @Bilhan ,

I suggest you to create two unrelated measure name tables to help calculation.

The code of "Measure Name" and "Measure selection" calculated tables are the same.

Measure Name = 
DATATABLE (
    "Measure", STRING,
    "Sort", INTEGER,
    {
        { "Measure1", 1 },
        { "Measure2", 2 },
        { "Measure3", 3 }
    }
)

Data model:

Measure Combine = 
VAR _COMBINE =
    ADDCOLUMNS (
        'Measure Name',
        "switch",
            SWITCH (
                'Measure Name'[Measure],
                "Measure1", [Measure1],
                "Measure2", [Measure2],
                "Measure3", [Measure3]
            )
    )
VAR _LEFT =
    SUMX ( FILTER ( _COMBINE, [Sort] = MIN ( 'Measure Selection'[Sort] ) ), [switch] )
VAR _RIGHT =
    SUMX ( FILTER ( _COMBINE, [Sort] = MAX ( 'Measure Selection'[Sort] ) ), [switch] )
RETURN
    IF (
        ISFILTERED ( 'Measure Selection'[Measure] ),
        IF (
            HASONEVALUE ( 'Measure Name'[Measure] ),
            SUMX (
                FILTER (
                    _COMBINE,
                    'Measure Name'[Measure] IN VALUES ( 'Measure Selection'[Measure] )
                ),
                [switch]
            ),
            _LEFT - _RIGHT
        ),
        "Please select two measures to compare"
    )

Result is as below.

Best Regards,
Rico Zhou

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