Which lane the interval belongs to -- a task, a resource, a phase.
Where the interval begins.
Where the interval ends.
OptionallabelWhat this interval is called, when the lane is not already its name.
A lane commonly holds several intervals -- a resource booked twice, a phase that pauses and resumes -- and without this they are announced by position alone. Omit it when the lane names the work.
One interval of a gantt chart, timeline or swimlane diagram.
The two coordinates are both positions on the same axis rather than a position and a magnitude, which is what makes this a shape of its own. A bar has one number and a baseline; an interval has two numbers and no baseline, and its length is a difference the reader has to be told rather than a height they can hear.