按类别计算费率（DAX、PowerBI）

Question

我正在使用 PowerBI。我的表格

Population

显示数据如下（数字不正确）：

Year Country       Granularity Population
2014 Albania       Urban       1.3m
2014 Albania       Total       5.6m
2015 Albania       Urban
2015 Albania       Total
2014 Aghanistan    Urban
etc.

我正在尝试衡量每个国家和每年的城市化率。

我试过这个：

Pct_urban = 
VAR __Measure_1 =
CALCULATE (
    SELECTEDVALUE ('Population'[Population_cor]),
    'Population'[Granularity] = "Urban"
)
VAR __Measure_2 =
CALCULATE (
    SELECTEDVALUE ('Population'[Population_cor]),
    'Population'[Granularity] = "Total"
)
KEEPFILTERS(VALUES('Population'[Year])),
CALCULATE(DIVIDE(__Measure_1,__Measure_2)

我的代码无法运行，你能提供任何建议吗？

Answer 1

您需要通过分别对城市和总粒度的人口进行求和，然后将它们除以排除粒度列上的任何现有过滤器来计算城市率：

Pct_urban = 
VAR UrbanPopulation = 
    CALCULATE (
        SUM('Population'[Population]), 
        'Population'[Granularity] = "Urban",
        REMOVEFILTERS('Population'[Granularity])
    )
VAR TotalPopulation = 
    CALCULATE (
        SUM('Population'[Population]), 
        'Population'[Granularity] = "Total",
        REMOVEFILTERS('Population'[Granularity])
    )
RETURN
    DIVIDE(UrbanPopulation, TotalPopulation)