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Dimensions organize Model values into meaningful business categories. A segment is the slice of a Variable identified by one or more Dimension items.

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Dimensions and their items

A Dimension defines a category, and its items identify the entries within that category.
  • Department might contain Sales, Engineering, and Marketing.
  • Region might contain East and West.
  • Product might contain Starter and Enterprise.

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A segment belongs to a Variable

A segment is a slice of a Variable’s data:
  • Revenue for Sales.
  • Revenue for the West.
  • Revenue for Sales in the West.
Sales is a Dimension item. Revenue for Sales is the segment. Several Dimensions can describe the same segment when the question needs more detail.

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A cell address identifies one result

A cell address identifies a Variable, one item from each applicable Dimension, and a time period. For example:
Revenue for Sales in the West for March 2026.
That address is more precise than a segment because it also identifies the exact period and every Dimension needed for that cell.

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Show segments in a Table Block

Use Segment by when you want a Table Block to expose a Variable’s segments by another Dimension. For example, segment Revenue by Department to see Sales, Engineering, and Marketing separately. The Segmentation option in the Use as control identifies a Dimension’s display role. A Dimension used as Mapping instead shows its item as a cell value.

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Formula scope follows the business rule

A default formula can apply broadly. A more specific formula can apply when a Variable is segmented by Department, or only when Department is Sales. Start with the broadest rule that expresses the actual business behavior. Add a segment-specific formula only when that segment genuinely needs a different calculation.