More transportation layer details at lower zoom levels

[jeffreysfridge]

I'm sorry if this is a basic question, but I've been trying different things with tippacanoe for a couple weeks now and I can't manage to figure it out. I have the mbtiles file of a state in the US that uses the Open Tile Schema. I would like to see more transportation layer details at lower zoom levels. For example, I want to see all the primary, trunk, and motorway roads from zoom 1 to 5. At zoom 6 to 9 I want to add all the secondary roads. From zoom 9 on up I want to see all transportation roads and paths. I'd like to merge that back into the original mbtiles file to replace the existing transportation layer. What steps do I need to take to do this?

[DeepakSharda]

First of all you install this library and convert your mbtiles into geojson and then use tippecanoe to create mbtiles and later join them with tile-join

-- For converting mbtiles to geojson

1. https://github.com/mapbox/vt2geojson
2. you can create seprate geojson for each layer in mbtile

---Creating geojson from mbtile

Once you have the geojson you can alway either split them with feature wise like where highway/fcalss ='primary'

tippecanoe z1 Z17 -l primary --drop-densest-as-needed --coalesce-densest-as-needed -pS splitted.geojson ( primary and trunk )

tippecanoe z6 Z17 -l secondary --drop-densest-as-needed --coalesce-densest-as-needed -pS splitted.geojson ( secondary )

tippecanoe z13 Z17 -l other --drop-densest-as-needed --coalesce-densest-as-needed -pS splitted.geojson ( other )

Then you can use tile join command to merge all of them