To effectively serve tiles to users, all rendering processes must be kept in synch with the exact same configuration.
npm install @basemaps/configTo effectively serve tiles to users, all rendering processes must be kept in synch with the exact same configuration.
Basemaps stores its configuration into a single DynamoDB table and separates the configuration objects into
- Imagery - Configuration for a single imagery layer, including location of all the Cloud optimized geotiffs, bounding boxes
- Tile Sets - Configuration on how to merge imagery/vector layers together to serve out as a combined layer
- Style - Vector tile style configuration (Style.json)
- Provider - Configuration about the owner of the service
This configuration is generally stored as JSON files in a git repository (eg linz/basemaps-config ) to allow easy modification and then programmatically loaded into Basemaps DynamoDB table
For LINZ's implementation of this configuration see linz/basemaps-config
``json`
{
"v": 1,
"id": "im_01E8121FN71M0PNZ6VB87DW05Z",
"name": "new_zealand_sentinel_2018-19_10m",
"projection": 3857,
"uri": "s3://linz-basemaps/3857/new_zealand_sentinel_2018-19_10m/01E8121FN71M0PNZ6VB87DW05Z",
"year": 2018,
"files": [
{
"height": 4892,
"name": "13-8032-5113",
"width": 4892,
"x": 19254793.17314903,
"y": -4980025.266835816
}
]
}
`json`
{
"id": "ts_01H8JF29R6S2NT7QXNC7GK90D4",
"type": "raster",
"format": "webp",
"name": "manawatu-whanganui-sn9158-1991-0.375m",
"title": "Manawatū-Whanganui 0.375m SN9158 (1991)",
"layers": [
{
"2193": "im_01H8JF29R6S2NT7QXNC7GK90D4",
"maxZoom": 32,
"minZoom": 0,
"name": "manawatu-whanganui-sn9158-1991-0.375m",
"title": "Manawatū-Whanganui 0.375m SN9158 (1991)"
}
]
}
Tilesets can have multiple aliases, allowing them to be linked by different names:
`json`
{
"type": "raster",
"id": "ts_auckland-2010-2012-0.5m",
"title": "Auckland 0.5m Rural Aerial Photos (2010-2012)",
"name": "auckland-2017-0.075m",
"aliases": ["auckland-urban-2017-0.075m"]
}
`json`
{
"id": "st_topographic",
"name": "topographic",
"style": {
"id": "st_topographic",
"glyphs": "/v1/fonts/{fontstack}/{range}.pbf",
"layers": [
{
"id": "Background",
"filter": ["all", ["==", "class", "dock"]],
"layout": {
"visibility": "visible"
},
"minzoom": 0,
"paint": {
"background-color": "rgba(184, 220, 242, 1)"
},
"type": "background"
},
{
"id": "Landcover-Sand",
"filter": ["all", ["==", "class", "sand"]],
"layout": {
"visibility": "visible"
},
"minzoom": 8,
"paint": {
"fill-color": "rgba(226, 226, 226, 0.75)"
},
"source": "LINZ Basemaps",
"source-layer": "landcover",
"type": "fill"
}
]
}
}
`json``
{
"id": "pv_linz",
"name": "linz",
"serviceIdentification": {
"accessConstraints": "Basemap @ CC BY 4.0 Land Information New Zealand",
"description": "National map tile service provided by Land Information New Zealand",
"fees": "There are no fees associated with access via the web interface or API.",
"title": "LINZ Basemaps Service"
},
"serviceProvider": {
"contact": {
"address": {
"city": "Wellington",
"country": "New Zealand",
"deliveryPoint": "Land Information New Zealand",
"email": "basemaps@linz.govt.nz",
"postalCode": "6145"
},
"individualName": "LINZ Customer Support",
"phone": "+64 4 4600110",
"position": "Customer Support"
},
"name": "Land Information New Zealand",
"site": "http://www.linz.govt.nz"
}
}