A trace without data is displayed when a "stacking" defined
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Nobody has claimed this yet.
bug
P3
- Dominant language
- JavaScript
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- Avg merge
- 2d 12h
- Merged PRs (30d)
- 28
Description
The trace trace0 is displayed, although I did not define its data.
Example on codepen - https://codepen.io/x-base/pen/vYZvqZB
code:
var trace = {
x: [0, 1, 2, 3, 4],
y: [1, 5, 3, 7, 5],
mode: "lines+markers",
stackgroup: "1",
fill: "none",
type: 'scatter'
}
var trace0 = { ...trace,
x: [null], // this is recommended workaround https://github.com/plotly/plotly.js/issues/2861#issuecomment-409587725
y: [null]
};
var trace1 = { ...trace };
Plotly.newPlot('myDiv', [trace0, trace1]);
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
Start with the CodePen reproduction linked in the issue and compare it with the workaround discussed in issue #2861. Trace why trace0 is rendered despite having no data, then verify that an empty trace is omitted while trace1 still displays correctly.
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
- 42/100