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weekname - script and chart function

This function returns a value showing the year and week number with an underlying numeric value corresponding to a timestamp of the first millisecond of the first day of the week containing date.

Syntax:  

WeekName(date[, period_no[,first_week_day]])

Return data type: dual

Arguments:  

Arguments
Argument Description
date The date to evaluate.
period_no shift is an integer, where the value 0 indicates the week which contains date. Negative values in shift indicate preceding weeks and positive values indicate succeeding weeks.
first_week_day

Specifies the day on which the week starts. If omitted, the value of variable FirstWeekDay is used.

The possible values first_week_day are:

  • 0 for Monday
  • 1 for Tuesday
  • 2 for Wednesday
  • 3 for Thursday
  • 4 for Friday
  • 5 for Saturday
  • 6 for Sunday

FirstWeekDay

Example:  

Add the example script to your app and run it. Then add, at least, the fields listed in the results column to a sheet in your app to see the result.

In this example, for each invoice date in the table, the week name is created from the year in which the week lies and its associated week number, shifted one week by specifying period_no as 1.

TempTable:

LOAD RecNo() as InvID, * Inline [

InvDate

28/03/2012

10/12/2012

5/2/2013

31/3/2013

19/5/2013

15/9/2013

11/12/2013

2/3/2014

14/5/2014

13/6/2014

7/7/2014

4/8/2014

];

 

InvoiceData:

LOAD *,

WeekName(InvDate, 1) AS WkName

Resident TempTable;

Drop table TempTable;

The resulting table contains the original dates and a column with the return value of the weekname() function. You can display the full timestamp by specifying the formatting in the properties panel.

Results table
InvDate WkName
28/03/2012 2012/14
10/12/2012 2012/51
5/2/2013 2013/07
31/3/2013 2013/14
19/5/2013 2013/21
15/9/2013 2013/38
11/12/2013 2013/51
2/3/2014 2014/10
14/5/2014 2014/21
13/6/2014 2014/25
7/7/2014 2014/29
4/8/2014 2014/33