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ASSETS.md

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Assets

Examples of assets used in the frontend as provided by coclicodata The type property of these objects is used to determine the render strategy in the frontend. The following mask is defined for the type property:

Asset Type Render Function Output Type
"application/vnd.apache.parquet" buildVectorTileMapboxLayer Vector Tile Layer
"image/tiff; application=geotiff; profile=cloud-optimized" buildRasterMapboxLayer Raster Tile Layer
"image/png" buildRasterMapboxLayer Raster Tile Layer
"application/png" buildRasterMapboxLayer Raster Tile Layer
"vector" buildGeojsonMapboxLayer Geojson Feature (collection) Layer
"geojson" buildGeojsonMapboxLayer Geojson Feature (collection) Layer 
const ResourceTypeFunctionMask = {
    "application/vnd.apache.parquet": buildVectorTileMapboxLayer,
    "image/tiff; application=geotiff; profile=cloud-optimized": buildRasterMapboxLayer,
    "image/png": buildRasterMapboxLayer,
    "application/png": buildRasterMapboxLayer,
    "vector": buildGeojsonMapboxLayer,
    "geojson": buildGeojsonMapboxLayer,
};

Collections

geoserver_link

Transparent layer that is used to create clickable polygons on the map.

Example

{
  "geoserver_link": {
    "href": "https://<base>/wmts?REQUEST=GetTile&SERVICE=WMTS&VERSION=1.0.0&LAYER=<workspace>:<layer>&STYLE=&TILEMATRIX=EPSG:900913:{z}&TILEMATRIXSET=EPSG:900913&FORMAT=application/vnd.mapbox-vector-tile&TILECOL={x}&TILEROW={y}",
    "type": "application/vnd.apache.parquet",
    "title": "Geoserver Parquet link"
  }
}

Items

visual

Visual layer from a geoserver, which is displayed on the map when a collection is toggled. Can contain Raster tiles or Vector tiles.

Vector example

An item with a vector visual should contain a "deltares:paint" property (as seen on mapbox resources). It is used to style the vector tiles. The following example shows the fallback paint that is used when "deltares:paint" is not present.

{
  "properties": {
    "deltares:paint": {
      "fill-color": "rgba(0,0,0,0)",
      "fill-outline-color": "#000000"
    }
  }
}
{
  "visual": {
    "href": "https://<base>/wmts?REQUEST=GetTile&SERVICE=WMTS&VERSION=1.0.0&LAYER=<workspace>:<layer>&STYLE=&TILEMATRIX=EPSG:900913:{z}&TILEMATRIXSET=EPSG:900913&FORMAT=application/vnd.mapbox-vector-tile&TILECOL={x}&TILEROW={y}",
    "type": "application/vnd.apache.parquet",
    "title": "Title",
    "description": "Description",
    "roles": [ 
      "visual"
    ]
  }
}

Raster example

{
  "visual": {
    "href": "https://<base>/wms?bbox={bbox-epsg-3857}&format=image/png&service=WMS&version=1.1.1&request=GetMap&srs=EPSG:3857&transparent=true&width=256&height=256&layers=<workspace>:<layer>",
    "type": "application/png",
    "title": "Title",
    "description": "Description",
    "roles": [
      "visual"
    ]
  }
}

mapbox

Visual layer from the mapbox api, usually containing Geojson features to show information on the map.

Example

{
  "mapbox": {
    "href": "mapbox://workspace.layer",
    "type": "vector",
    "title": "Title",
    "description": "Description",
    "source": "nuts_regions-b1ics1",
    "roles": [
      "mapbox"
    ]
  }
}