plotly / plotly/plotly.js

plotting large datasets behaves differently in 2.23 as in 2.16 with zsmooth "false" or "fast"

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bug P3 regression
Dominant language
JavaScript
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Description

Hello,
I am having issue when I try to plot large set of data,

In the below code pen attached Link,
I was trying to plot heatmap just for one row and around 90,000 of data.

It was working before in 2.16.0 version,
but in later version after 2.23.0 to 2.27.0,
it does not seems to render same data which,
I was rendering before in 2.16.0.

[There is exceptional case for latest version,
if I set zsmooth property to "best" then it works,
but also not work with zsmooth "false" or "fast"]

[Sample Code] (https://codepen.io/Deepa-Dhiman-the-scripter/pen/KKJjmNG)

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  4. Open a pull request that references the issue number.

Research direction

Start with the linked CodePen and compare its one-row, roughly 90,000-point heatmap in Plotly.js 2.16.0 and later versions. Investigate the differing rendering with zsmooth set to false, fast, and best; done means the affected modes render consistently with the earlier behavior or the changed behavior is clearly documented.

Written by the indexing model from the issue text.

Assessment

Tech stack
javascript
Domain
data-visualization
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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