Directional and non-directional table calculations

Let us have a closer look at directional and non-directional table calculations:

1. Navigate to https://public.tableau.com/profile/marleen.meier to locate and download the workbook associated with this chapter.
2. Navigate to the Directional/Non-Directional worksheet.
3. Create the calculated fields, as shown in the following table:

   Name	Calculation	Notes
   Lookup	LOOKUP(SUM([Sales]),-1)	Notice the -1 included in this calculation. This instructs Tableau to retrieve the value from the previous row.
   ...