observablehq / observablehq/plot
A transform to consolidate ordinal values outside the top n into an “other” category, perhaps in conjunction with the group transform.
Open
Nobody has claimed this yet.
enhancement
- Dominant language
- HTML
- Stars
- 5.4k
- Forks
- 244
- PR merge metrics
- No merged PRs in 30d
Description
e.g., https://next.observablehq.com/d/0e0c0dcb66d6714e
function other(valueof, domain, unknown) {
if (typeof valueof !== "function") valueof = field(valueof);
domain = new Set(domain);
return (d, i, data) => {
const value = valueof(d, i, data);
return domain.has(value) ? value : unknown;
};
}
function field(x) {
return d => d[x];
}
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
The issue provides an Observable example and a proposed JavaScript transform, but names no repository files or tests. Start by reviewing the existing group transform and the linked example; done means agreeing on and implementing a transform that maps ordinal values outside the top n to an “other” category, including its interaction with grouping.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- javascript
- Domain
- data-visualization
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 25/100