MovingMax

The MovingMax function finds the maximum value of a column within a moving window.

Syntax

MovingMax(\[Column\], above, below)

Function Arguments:

  • [Column] (required) - The column to be searched.
  • above (required) - The first row to include, counting backward from the current row.
  • below (optional) - The last row to include, counting forward from the current row. Defaults to 0 (current row will be the last row included).

When using this function without a sort enforced, there can be unexpected results. In order to ensure that the values are stable, verify that there is a sorted column within the table.

Example

A table lists the weekly sales for the past year. The table is sorted ascending by the week. The MovingMaxย function can be utilized in order to find the maximum value within specific windows.

MovingMax(\[Weekly Sales\], 4)

With [Weekly Sales] as the column argument and 4 as theย above argument, the maximum weekly sales value will be calculated for each week along with the four previous weeks. Since the below argument was not specified, it defaults to 0. ย 

MovingMax(\[Weekly Sales\], 0, 4)

Here, the above argument is 0, so there will not be any previous weeks included in the maximum calculation. The below average is 4, so the maximum weekly sales value will be computed for each week along with the next 4 weeks.

MovingMax(\[Weekly Sales\], 2, 2)

Here, theย above argument is 2, so the previous two weeks will be included in the maximum calculation. In addition, the below argument is 2, so the following two weeks will be included as well.

MovingMax(\[Weekly Sales\], 8, -4)

Here is an example where theย below parameter is negative. The below parameter can be negative as long as the value is less than that of theย above parameter. In this example, each window begins 8 weeks before the current week and ends 4 weeks before the current week, inclusive.


Related resources