[Feature request] I think there should be an easy and straightforward way to change opacity in plotly express cloropleth maps
Nobody has claimed this yet.
- Dominant language
- Python
- Stars
- 18.8k
- Forks
- 2.8k
- Avg merge
- 16h 26m
- Merged PRs (30d)
- 21
Description
Many times in GIS and map visualization, it is useful to add a certain degree a transparency to a vector layer to see which features of the baseline map are covered by the tiles.
To my knowledge, there are options for selecting continuous and discrete color scales.
However, there isn't an option for removing the color altogether (visualizing only the vector borders) or changing the opacity of the color
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 with the Plotly Express choropleth implementation and its existing continuous and discrete color-scale options. Check how vector borders and map layers are represented, then define the expected behavior for removing fill color or applying transparency while retaining borders. Done means the requested opacity and border-only behavior are supported and covered by relevant tests.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- plotly, python
- Domain
- data-visualization
- Issue type
- Feature
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Stale
- Clarity
- Mostly clear
- Newbie friendliness
- 35/100