readme.md

WMTS to MBTiles utility

NodeJS utility to fetch map tiles from WTMS service to MBTiles format.

Usage

Usage: wmts-to-mbtiles [options]

  Options:

    -h, --help          output usage information
    --layers            List WMTS service layers
    --layer [id]        Get layer
    --output [mbtiles]  Output file
    --zoom [zoom]       Zoom level
    --input [url]       WMTS service URL
    --bbox [w s e n]    Latitude and longitude values, eg. "23.411 59.731 26.850 60.562"

Defaults:

url: https://julkinen.liikennevirasto.fi/rasteripalvelu/service/wmts
layer: liikennevirasto:Rannikkokartat public
zoom: 10

Example

Fetch default layer from liikennevirasto.fi and output test.mbtiles:

wmts-to-mbtiles --output test.mbtiles

Fetch smaller area:

wmts-to-mbtiles --zoom 15 --bbox "23.411 59.731 26.850 60.562" --output test.mbtiles

Helper for defining the bbox: http://boundingbox.klokantech.com/

List layers in {layer id} :: {layer name} format:

wmts-to-mbtiles --layers

Finnish coastal nautical charts:

Check out https://github.com/vokkim/rannikkokartat-mbtiles

Preview result

Install mbview:

npm install -g mbview

Get a Mapbox access token for the basemap and export MAPBOX_ACCESS_TOKEN=...

Run mbview:

mbview --port 4999 test.mbtiles

Generate zoom levels

1. Install GDAL Complete (> 2.1)

• For Mac: http://www.kyngchaos.com/software/frameworks
• echo 'export PATH=/Library/Frameworks/GDAL.framework/Programs:$PATH' >> ~/.bash_profile

2. Use gdaladdo to generate zoom levels for existing mbtiles file:

   gdaladdo -r cubic test.mbtiles 2 4 8 16 32

Use cubic sampling for better results.

License

MIT