获取过滤器范围之外的值

Question

我正在使用长格式 table 数据显示开始月份、结束月份和每月成本的 tableau 项目。我正在尝试显示（动态）日期范围的每月成本的视觉效果，然后覆盖多月行总成本的参考线。我怀疑答案在于使用细节级别 (LOD) 表达式，但似乎无法弄清楚。

csv 示例：

start,end,month length,x,a,b,c,d,total
1/1/2019,1/1/2019,1,1.2,0.08,0.01,0.1,0.299,0.489
2/1/2019,2/1/2019,1,1.1,0.08,0.01,0.1,0.295,0.485
3/1/2019,3/1/2019,1,0.9,0.08,0.01,0.12,0.285,0.495
1/1/2019,2/1/2019,2,2.3,0.08,0.01,0.1,0.297086956521739,0.487086956521739
2/1/2019,3/1/2019,2,2,0.08,0.01,0.109,0.2905,0.4895
1/1/2019,3/1/2019,3,3.2,0.08,0.01,0.105625,0.2936875,0.4893125

忽略 x、a、b、c、d - 它们是为了表明图表有多个度量值等于每月总计。

对于相同的开始和结束月份，我们有 month length: 1。与这些行关联的值是每月值。为了绘制月份的动态范围图，我可以通过过滤 month length: 1 并添加计算字段过滤器来设置开始日期到结束日期范围 [Start Date] >= [Selected Start Date] AND [Start Date] <= [Selected End Date]

来绘制这些月度值

鉴于此 table，我如何显示所选开始到结束范围内存在的 total 值的参考线（start date: 1/1/2019、end date: 3/1/2019、 month length: 3), 即使有 month length: 1 的过滤器？这里的最终结果将是一行 0.4893125

Answer 1

是的，你是对的，你需要使用LoD。

如果您需要绕过过滤器，请使用 LoD Fixed，下面的代码片段将为您提供 month = 3 的数据，尽管过滤器是 month=1。根据您的要求更改代码：

{ FIXED : Max(IF [Month Length] = 3 THEN [A] END)}

编辑---------------------------------------- --------------------------

{ FIXED : 
Max(
IF ([Start Date] >= [Selected Start Date] AND 
[Start Date] <= [Selected End Date]) AND
[Month Length] = 3 THEN [A] END)}

获取过滤器范围之外的值

Get value that is outside scope of filter

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