plotly / plotly/plotly.js

Pie chart not displaying when plotting big and small numbers at the same time.

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bug P2 sev-2
Dominant language
JavaScript
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Forks
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Avg merge
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Merged PRs (30d)
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Description

When I plot a piechart, if there is a number much larger than another one (by a factor 100 000 000), no piechart is displayed.
If I then unselect one of the value, the piechart is displayed.
If i reduce the factor between the two numbers, the piechart is displayed as well.

Here is a example:

https://jsfiddle.net/3qr50za6/

var data = [
{
"type": "pie",
"values": [
"1",
"1e-8",
],
"labels": [
"Number",
"Much smaller number",
],
}
];

var layout = {
"title": "Small and big numbers issues",
"showlegend": true,
width: 1000,
height: 400
};

Plotly.newPlot('myDiv', data, layout);

Contributor guide

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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 with the linked jsfiddle reproduction and the Plotly.newPlot entry point, then trace how pie-chart values are processed when their magnitudes differ greatly. Confirm the failure with [1, 1e-8] and compare it with the working cases described in the issue. Done means the chart renders with both values selected and the regression is covered by the relevant existing test if one is found.

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
35/100

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