Question

我正在尝试计算过滤日期列中MIN日期和最大日期之间的年数，然后将结果除以Y列X列的COUNT。

Spotfire文档说自定义表达式是操作过滤数据的关键，但我不确定如何将临时变量传递给SpotD函数，如DateDiff。

Example:
DateDiff(Min([Date]),Max([Date])) / [Column.Y] OVER [Column.X]

 +------+----------+------------+
 | Name |   Date   | Made Sale? |
 +------+----------+------------+
 | joe  | 1/1/2010 | 10         |
 | joe  | 2/1/2011 | 11         |
 | joe  | 3/1/2012 |            |
 | joe  | 4/1/2013 | 40         |
 | joe  | 5/1/2014 |            |
 | pam  | 1/1/2010 | 100        |
 | pam  | 2/1/2011 | 19         |
 | pam  | 3/1/2012 | 23         |
 | pam  | 4/1/2013 | 30         |
 | pam  | 5/1/2014 |            |
 | mark | 1/1/2010 |            |
 | mark | 2/1/2011 | 1          |
 | mark | 3/1/2012 |            |
 | mark | 4/1/2013 |            |
 | mark | 5/1/2014 | 49         |
 +------+----------+------------+
EG. Filter from 2011-2014, what were Joe, Pam, and Mark's frequency of sales per year?

Answer 1

您需要将其包装在IF（）或CASE等逻辑语句中。

If(DatePart('year',[Date]) >= Year('2011') and DatePart('year',[Date]) <= Year('2014'),DateDiff(Min([Date]),Max([Date])) / [Column.Y] OVER [Column.X])

您可以使用财产控制并传入任何输入或计算的年份来代替'2011'和'2014'。它看起来像

Year('${yourPropertyControlName}')

Spotfire DateDiff使用自定义表达式

1 个答案: