plotly / plotly/plotly.py

The color of Scattergl points are missing when using animation

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bug P3 sev-3
Dominant language
Python
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Avg merge
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Description

import plotly.graph_objects as go

fig = go.Figure(
    data=[go.Scattergl(x=[0, 1], y=[0, 1])],
    layout=go.Layout(
        xaxis=dict(range=[0, 5], autorange=False),
        yaxis=dict(range=[0, 5], autorange=False),
        title="Start Title",
        updatemenus=[dict(
            type="buttons",
            buttons=[dict(label="Play",
                          method="animate",
                          args=[None])])]
    ),
    frames=[go.Frame(data=[go.Scattergl(x=[1, 2], y=[1, 2])]),
            go.Frame(data=[go.Scattergl(x=[1, 4], y=[1, 4])]),
            go.Frame(data=[go.Scattergl(x=[3, 4], y=[3, 4])],
                     layout=go.Layout(title_text="End Title"))]
)
fig.update_layout(showlegend=False)
fig.show()

the visualization is shown as below:
(https://github.com/plotly/plotly.py/assets/55653936/29679f73-06e7-43dd-80ae-1c7d7636f29d)

When I execute the above code, only the first frame line segment has normal color, and the other frame line segments have no color.

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 running the provided Python example and reproducing the animation with Scattergl. Compare the first frame with later frame line colors and trace the animation behavior in the Plotly visualization stack. Done means all animated frame line segments retain their expected colors.

Written by the indexing model from the issue text.

Assessment

Tech stack
python
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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