But when you use Specific Dimensions, then it’s up to you to determine which dimensions are for addressing and which for partitioning. When you add a table calculation using the Compute Using options, Tableau identifies some dimensions as addressing and others as partitioning automatically, as a result of your selections. So when you order the fields in the Specific Dimensions section of the Table Calculation dialog box from top to bottom, you are specifying the direction in which the calculation moves through the various marks in the partition. The direction in which the calculation moves (for example, in calculating a running sum, or computing the difference between values) is determined by the addressing fields. Partitioning fields break the view up into multiple sub-views (or sub-tables), and then the table calculation is applied to the marks within each such partition. The remaining dimensions, upon which the table calculation is performed, are called addressing fields, and determine the direction of the calculation. The table calculation is performed separately within each partition. The dimensions that define how to group the calculation (the scope of data it is performed on) are called partitioning fields. When you add a table calculation, you must use all dimensions in the level of detail either for partitioning (scoping) or for addressing (direction). Specifically, the virtual table is determined by the dimensions within the “level of detail,” which means the dimensions on any of the following shelves or cards in a Tableau worksheet: This table is not the same as the tables in your data source. Transforming values to show percent of totalįor any Tableau visualization, there is a virtual table that is determined by the dimensions in the view. Transforming values to show running totals You can use table calculations for a variety of purposes, including:
They are calculated based on what is currently in the visualization and do not consider any measures or dimensions that are filtered out of the visualization. That computes on the local data in Tableau. Table calculations are a special type of calculated field Use your (Link opens in a new window) account to sign in.Ī table calculation is a transformation you apply to the values in a visualization. What is a table calculation?įor a 4 minute introduction to table calculations in Tableau, click this video link.įor related resources and videos, see Intro to Tableau Calculations (Link opens in a new window). This article explains the basics of table calculations and how to create them in Tableau.
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