plotly / plotly/plotly.py

Trendline returns empty dataframe if color is set

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Description

fig = px.scatter(df, x="value1", y="value2", trendline="ols", color="colorcolor")

has resulted in:

results = px.get_trendline_results(fig)
print(results)

If I remove the color, then it works as expected. I don't know why a priori, trendline and color wouldn't be possible at the same time?

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  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 issue with px.scatter using trendline="ols" and color="colorcolor", then inspect how px.get_trendline_results(fig) handles the generated figure. Done means trendline results are returned when both color and trendline are set, while the existing no-color behavior continues to work.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
Domain
data-visualization
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Active
Clarity
Mostly clear
Newbie friendliness
58/100

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