Highlight actions in Tableau - Cell-by-Cell Formula Trace

Concept Flow

User selects a Region value (e.g., 'West')
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Tableau identifies marks where Region = 'West'
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Highlight action visually emphasizes these marks
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Other marks remain visible but dimmed

This flow shows how a highlight action works: user selection filters marks by Region, Tableau highlights matching marks, and dims others.

Formula

User clicks on 'West' in the Region filter or marks to trigger highlight action.

This action triggers Tableau to find and highlight all marks where Region equals 'West'.

Step-by-Step Trace

Region	Sales	Highlight Status
East	1000	Dimmed
West	1500	Highlighted
North	1200	Dimmed
South	1300	Dimmed

Only the 'West' region row is highlighted; others are dimmed but visible.

Variable Tracker

Variable	Value	Explanation
SelectedRegion	West	User selection triggers highlight action
MatchingMarks	Row with Region 'West'	Marks Tableau highlights
NonMatchingMarks	Rows with Regions East, North, South	Marks Tableau dims

Key Moments

What triggers the highlight action?

Which marks get highlighted?

What happens to marks that do not match the selection?

Sheet Trace Quiz - 3 Questions

What happens when you select 'West' in a highlight action?

A Only the 'West' region marks are visually emphasized.

B All regions are hidden except 'West'.

C The sales numbers for 'West' change automatically.

D The data for 'West' is deleted.

Key Result

Highlight actions in Tableau visually emphasize marks matching a user selection while dimming others to maintain context.

Transcript

When a user clicks on a region like 'West', Tableau finds all data points with that region. It then highlights those marks by changing their appearance, such as color or brightness. Other marks stay visible but appear dimmer. This helps users focus on selected data without losing the overall view.