png-palette metadata and support for multiple palettes
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Description
For raster mbtiles, it could be useful to store pixel data in greyscale and apply colors through a palette. It could be more useful to have an option to select or join a palette with pixel data for any given tile query.
1. What storage and/or query support currently exists for palette colors on raster mbtiles?
2. How could the palette be updated?
3. Could metadata support N-palettes?
4. How could a palette be selected or joined during a query?
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
Review the current MBTiles specification for raster tile storage, palette metadata, and query behavior. Document what support exists, then define how palette updates, multiple palettes, and palette selection or joins would work before proposing a specification change.
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Assessment
- Domain
- documentation
- Issue type
- Feature
- Difficulty
- 5/5
- Estimated time
- Over a week
- Activity status
- Stale
- Clarity
- Needs clarification
- Newbie friendliness
- 20/100