observablehq / observablehq/plot

An invert function for point and band scales?

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enhancement
Dominant language
HTML
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Forks
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Description

Basically this would be:

scale.invert = x => d3.least(domain, value => Math.abs(scale(value) + scale.bandwidth/2 - x))

(could be useful with #1629, for example)

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 by locating the point and band scale implementations and checking how scale inversion is handled elsewhere in the repository. Review the proposed d3.least-based behavior and the relationship to #1629. Done would require a decided API and verified inversion behavior for both scale types, but the issue does not name files or tests.

Written by the indexing model from the issue text.

Assessment

Tech stack
d3, javascript
Domain
data-visualization
Issue type
Feature
Difficulty
5/5
Estimated time
Over a week
Activity status
Stale
Clarity
Needs clarification
Newbie friendliness
25/100

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