plotly / plotly/plotly.js

add formatting options for exponentformat: "power" to provide normalised scientific notation

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feature P3
Dominant language
JavaScript
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Description

Hi,

Setting exponentformat to "power" can sometimes display numbers in a format: 0.a × 10^b . We teach the normalised scientific notation (https://en.wikipedia.org/wiki/Scientific_notation#Normalized_notation), in which the number before the decimal place must be greater than or equal to 1, and less than 10.

I couldn't see a way of setting Plotly to use this notation ("tickformat" options don't seem to expose this either), and was wondering whether it could be implemented?

Thanks for your time (and for Plotly, which is great!)

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Research direction

Start by tracing how Plotly handles the exponentformat option and how tickformat is applied. Compare the existing "power" output with normalized scientific notation, where the mantissa is at least 1 and less than 10. Done means a documented formatting option produces that notation consistently, with tests covering representative values.

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
35/100

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