DAX Measure 使用其中的参数计算平均值

DAX Measure to calculate average with Parameters inside it

我有这样的数据,

App_Num Days    Price
A1      10      100
A1      11      150
A2      11      200
A3      12      250
A3      12      300
A4      20      350
A4      21      400

天数的平均值在卡片视觉对象上显示为 13.857。

现在设置了两个参数供用户调整数值查看。

  1. 总值(最小和最大范围)

例如,如果用户选择 0-280-,则应列出 A1(100 + 150 = 250 小于 280)和 A2(200 小于 280)。

我使用了这样的 DAX 并构建了一个像这样的 table,

Apps_in_scope = 

Var min_amount = Min('Total Value'[Total Value])

Var max_amount = Max('Total Value'[Total Value])

var required_app_num = SELECTEDVALUE(Table1[App_Num])

Var required_amount = CALCULATE(sum(Table1[Price]),FILTER(Table1,Table1[App_Num] = required_app_num)) 

var in_scope = if(And(required_amount <= max_amount, required_amount >= min_amount),1,0)

return in_scope

而且我能够制作出这样的视觉效果,

App_Num Apps_in_scope
A1         1
A2         1
A3         0 
A4         0

现在选择总价格范围后,如果用户手动选择天数参数为 15,那么我的平均值将按照此逻辑移动。

所以我想放在卡片上的新度量现在预计会显示 (15+15+15+12+12+20+21)/7 = 15.714

这个度量怎么写。请帮我解决这个问题

这是假设您的价格范围和天数选择有单独的表格(如假设参数表)。

My measure =
VAR apps =
    SELECTCOLUMNS (
        FILTER (
            SUMMARIZE ( Table1, Table1[App_Num], "Total Price", SUM ( Table1[Price] ) ),
            [Total Price] >= MIN ( 'Total Value'[Total Value] )
                && [Total Price] <= MAX ( 'Total Value'[Total Value] )
        ),
        "App_Num", [App_Num]
    )
RETURN
    AVERAGEX (
        Table1,
        IF ( Table1[App_Num] IN apps, SELECTEDVALUE ( Days[Days] ), Table1[Days] )
    )

我会稍微调整你的衡量标准,以便它更适合取平均值:

Apps_in_scope_2 =
VAR min_amount = MIN ( 'Total Value'[Total Value] )
VAR max_amount = MAX ( 'Total Value'[Total Value] )
VAR required_amount =
    CALCULATE ( SUM ( Table1[Price] ), ALLEXCEPT ( Table1, Table1[App_Num] ) )
VAR in_scope =
    IF ( AND ( required_amount <= max_amount, required_amount >= min_amount ), 1, 0 )
RETURN
    in_scope

有了这个调整,平均值就相当简单了:

AvgMeasure =
VAR DaysParam = SELECTEDVALUE ( DaysSlicer[Days] )
RETURN
    AVERAGEX( Table1, IF( [Apps_in_scope_2] = 1, DaysParam, Table1[Days] ) )

编辑:

这是一个替代版本,它不使用第一个度量,但应该更好地扩展到大型数据表。

AvgAlternate =
VAR min_amount = MIN ( 'Total Value'[Total Value] )
VAR max_amount = MAX ( 'Total Value'[Total Value] )
VAR DaysParam = SELECTEDVALUE ( DaysSlicer[Days] )
VAR apps =
    ADDCOLUMNS (
        SUMMARIZE (
            Table1,
            Table1[App_Num],
            "@Price", SUM ( Table1[Price] ),
            "@Rows", COUNT ( Table1[Price] )
        ),
        "@Days",
            IF (
                AND ( [@Price] <= max_amount, [@Price] >= min_amount ),
                DaysParam * [@Rows],
                CALCULATE ( SUM ( Table1[Days] ) )
            )
    )
RETURN
    DIVIDE ( SUMX ( apps, [@Days] ), SUMX ( apps, [@Rows] ) )