Plotly Express doesn't force category orders on axes
Open
Nobody has claimed this yet.
bug
P3
- Dominant language
- Python
- Stars
- 18.8k
- Forks
- 2.8k
- Avg merge
- 16h 26m
- Merged PRs (30d)
- 21
Description
This causes ordering issues like this:
import plotly.express as px
import pandas as pd
df = pd.DataFrame(dict(
x=['a','b','c','d'],
y=[1,2,3,4],
z=['p','q','p','q']
))
px.bar(df, x="x", y="y", color="z")
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
Research direction
Start by running the pandas example in the issue and tracing how Plotly Express assigns category orders to the bar chart axes. Confirm the expected ordering from the example, then add coverage for the case and verify that the resulting axes consistently respect the category order.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- pandas, plotly, python
- Domain
- data-visualization
- Issue type
- Bug
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 35/100