add_moving_average

Add a new field to the data extract with moving averages.

Introduction

Use the add_moving_average enrichment to add a new field to the data extract which calculates the moving average for a specific number of values. Moving averages are calculated with the formula (value_in_current_row + values_in_previous_N_rows + values_in_next_N_rows) / (2 * N + 1) where N is the number you specify in the Window Size field. The first and last N rows in the new field are left empty.

Creating the enrichment

For more information on creating an enrichment, see Using custom scripts.

Configuring the enrichment

To configure the enrichment, fill in the following fields. Required fields are marked with an asterisk (*).

Field

Specify the field which contains the original values.

Window Size

Specify the number of values before and after the current row to use for calculating moving averages.

New Fieldname

Specify the name of the new field to add to the data extract.

Subtable

Enter the name for a subtable that you want to contain the enriched data. The enrichment is applied to the whole data extract, then the enriched data is output into the subtable you have named here.

This subtable is a temporary table, which means it only exists for this custom script. You can apply additional instructions within the same custom script to the subtable. However, the subtable cannot be used in any other custom scripts.

Example

Enrichment configuration

Field

Clicks

Window Size

1

New Fieldname

Clicks_Moving_Average

Data table before enrichment

Date	Clicks
2021-11-01	7
2021-11-02	3
2021-11-03	18
2021-11-04	9

Data table after enrichment

Date	Clicks	Clicks_Moving_Average
2021-11-01	7
2021-11-02	3	14
2021-11-03	18	15
2021-11-04	9