Loading Layers

loadGeoJsonLayer

The primary method for adding data to the map. Accepts any GeoJSON FeatureCollection:

import { LayerType } from 'autk-map';

// Auto-detect geometry type
map.loadGeoJsonLayer('neighborhoods', geojson);

// Explicit layer type (required for OSM types)
map.loadGeoJsonLayer('buildings', geojson, LayerType.AUTK_OSM_BUILDINGS);
map.loadGeoJsonLayer('roads', geojson, LayerType.AUTK_OSM_ROADS);

Bounding Box

The first layer loaded sets the map's bounding box and initial camera framing. If the GeoJSON includes a bbox property (as returned by db.getLayer()), it is used directly. Otherwise, the bounding box is computed from the geometries.

You can also set the bounding box manually before loading any layer:

map.boundingBox = [minLon, minLat, maxLon, maxLat];

Loading Multiple Layers from autk-db

for (const layer of db.getLayerTables()) {
  const geojson = await db.getLayer(layer.name);
  map.loadGeoJsonLayer(layer.name, geojson, layer.type as LayerType);
}

The layer.type property from autk-db matches the string values of LayerType, so a cast is safe.

loadGeoTiffLayer

Loads a raster layer from GeoTIFF-derived data (represented as a FeatureCollection with raster metadata in feature properties):

map.loadGeoTiffLayer('elevation', geotiffFeatureCollection, LayerType.AUTK_RASTER);

Heatmaps

autk-db's buildHeatmap returns data in the format expected by loadGeoTiffLayer. Pass the result directly.