observablehq / observablehq/plot

Stack overlapping, non-aligned intervals?

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enhancement question
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Description

Currently, if two rects do not share an x1 and x2, they will not stack, it would be great if they did!

Here's an example of something i would like to stack but is not:

untitled(88)

https://observablehq.com/@fgregg/chicago-shelter-eviction-rates@129

I manually set offsets to look like this:

untitled(89)

https://observablehq.com/@fgregg/chicago-shelter-eviction-rates@171

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the two linked Observable examples and compare the default stacking with the manually offset result. Trace the interval stacking behavior used for rects, then verify that overlapping intervals with non-matching x1 and x2 values stack as requested without breaking aligned intervals.

Written by the indexing model from the issue text.

Assessment

Tech stack
d3
Domain
data-visualization
Issue type
Feature
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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