observablehq / observablehq/plot
Continuous crosshair?
Open
Nobody has claimed this yet.
enhancement
- Dominant language
- HTML
- Stars
- 5.4k
- Forks
- 244
- PR merge metrics
- No merged PRs in 30d
Description
The crosshair mark uses the pointer transform to snap to the data, but it’d be nice to also support a continuous mode that inverted the x and y scales instead.
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Review the existing crosshair mark and its pointer-transform behavior, then inspect how the x and y scales are represented. Clarify the continuous-mode behavior before implementation; done means the crosshair can use inverted x/y scales without pointer snapping, with tests or examples demonstrating it.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- d3, javascript
- Domain
- data-visualization
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100