plotly / plotly/plotly.py

log_y=True produces empty plot

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bug P3
Dominant language
Python
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Description

I have the following case:

import plotly.express as px
df = pd.DataFrame(np.random.randint(0,100,size=(100, 2)), columns=['year', 'type'])
fig = px.density_heatmap(df, x='year', y='type', log_y=True)
fig.show()

The returned plot is only the layout but with no actual values in it.

plotly.version = '4.14.3'

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Research direction

Reproduce the issue with the provided pandas DataFrame and px.density_heatmap(..., log_y=True) example, then trace the density_heatmap entry point and its log-axis handling. Check the relevant existing tests for density heatmaps or logarithmic axes; done means the example renders its data instead of only an empty layout.

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
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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