observablehq / observablehq/plot

Tick values in quantile legend don't get rounded

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bug
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HTML
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Description

It appears that the tick values in a quantile legend don't get rounded. Example:

Plot.barX([0,1,2,3], {fill: d => d}).plot({color: {type: "quantile", legend: true}})
Plot.barX([0,1,2,3,4,5,6], {fill: d => d}).plot({color: {type: "quantile", legend: true, n: 7}})
Image

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First steps

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  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 running the two provided Plot.barX examples with quantile legends and inspect the color legend path they exercise. Done means the quantile legend tick values are rounded consistently for both the default and n: 7 cases.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript
Domain
data-visualization
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
45/100

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