Comments (4)
Hmm, we could expand the specification a bit more in that direction, but the optimizations in most of the MBTiles implementations are outside of the spec - only the interface is specified exactly, not the views or anything like that. Views are a transparent way of compressing both tile & grid data (in pretty much the same way).
from mbtiles-spec.
the non intuitive thing is just how you have to query 3 fields and put them together for the grids but not the tiles.
from mbtiles-spec.
You mean with the views? As far as TileMill output, it's views for both grids and images.
from mbtiles-spec.
oh sorry for the confusion, the fact that they are views not fields isn't an issue, the fact that to access the tile.json you have to querry grid field in the grids view plus key_name and key_json from grid_data and put them together is the confusing part
from mbtiles-spec.
Related Issues (20)
- spec says grid data is gzip compressed, but in reality it's deflate compressed HOT 1
- Regarding .MBTiles to .DB Conversion HOT 3
- Explain how vector tile data is stored HOT 8
- The mbtiles-spec is outdated, needs revison
- Update URL in github description HOT 1
- zxy from zoom_level, tile_column, tile_row in mbtiles file HOT 2
- SQLite4 compatibility HOT 1
- EPSG:4326 projection support HOT 3
- Document maskLevel
- Uncaught (in promise) Error: Unimplemented type: 3 HOT 2
- Update vector_layers to match tilejson-spec 3.0 HOT 1
- grids vs tiles HOT 1
- View tiles in specification HOT 2
- png-palette metadata and support for multiple palettes
- iOS UTTypeIdentifier in Info.plist?
- Support custom tiling scheme HOT 4
- update the url for specification documents for the MBTiles tileset format
- Clarify kind of version number HOT 4
- Add tile size to metadata
- Wrap around 180th meridian HOT 1
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from mbtiles-spec.