plotly / plotly/plotly.js

Scattergl tooltip order inverted when using scattergl on overlapping traces

Open
#5,945 0 comments 2 reactions 0 assignees View on GitHub

Nobody has claimed this yet.

bug P3
Dominant language
JavaScript
Stars
18.3k
Forks
2k
Avg merge
2d 12h
Merged PRs (30d)
28

Description

Hi,
it seems I recently stumbled across some tooltip bug while hover
over concealed traces when using scattergl as trace type.

Please have a look at following example:
https://codepen.io/Mampf404/pen/OJgwbNb

  1. Scatter traces behave correctly. The last rendered trace is the one who is displayed in the the tooltip.

  2. Scattergl traces instead, displaying the first rendered (underlying) trace, which seems not correct.

Contributor guide

Open the contributing guide

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 by reproducing the overlapping-trace hover behavior in the linked CodePen example, comparing scatter and scattergl. Trace the scattergl hover and tooltip entry points to identify where rendered-trace order is selected. Done means the topmost overlapping trace is shown consistently and the example behavior is covered by a regression test.

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
38/100

Get new issues in your inbox

A short digest of beginner-friendly GitHub issues.