# Function pastWeek
pastWeek(
measure,name?):CalculatedMeasure
Creates a calculated measure that calculates the value for the same day in the previous week.
The time resolution is determined by the minimum date level of the date dimension in the query that uses the returned measure.
# Parameters
| Parameter | Type | Description |
|---|---|---|
measure | Measure | Measure to apply past value to |
name? | string | Name for the new measure |
# Returns
A calculated measure instance
# Example
Calculate total cost for the corresponding day one week ago from the Sample Ecommerce data model.
measureFactory.pastWeek(measureFactory.sum(DM.Commerce.Cost))