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flow family
gantt
Horizontal bars positioned along a time axis showing task durations.
Project plans, roadmaps, deployment timelines. Each task is a horizontal bar starting at its start date and ending at its end date. Often colour-coded by phase or owner.
When to use
Project planning where multiple tasks overlap in time.
When NOT to use
Just chronological events without duration (use timeline-chart).
Rhetorical roles
- evolve
- system-explain
Variants & related
Required primitives
- has_axis_titles
- has_data_labels
Optional primitives
- has_legend
- has_source_note
Common anti-patterns
- rainbow-palette
Disambiguation rules
- Horizontal bars positioned at different x-offsets (start times) with varying lengths (durations).
- If no real durations (just point-in-time events), it is timeline-chart.