Protected _initFrom runtime params
Protected _ngwProtected Readonly _starterReadonly emitterReadonly keysReadonly mapReadonly runtimeStatic controlsOptional options: anyStatic getStatic getStatic keysProtected _addInternal
Optional options: unknownProtected _emitOptional data: anyProtected _onShortcut method to create base layer
Optional options: O | LayerAdaptersOptions[K]Organized addition to the map design and controls elements,
calling control.onAdd(this.webMap.mapAdapter)
ngwMap.addControl(new CustomControl(), 'bottom-left');
ngwMap.addControl('ZOOM', 'top-right')
position relative to the map angles
Optional options: MapControls[K]initialization parameters if the control is set as a string value
Shortcut for addGeoJsonLayer to create GeoJson adapter with generic types for working in typescript
Create layer from GeoJson data. Set style and behavior for selection.
// Add simple layer
webMap.addGeoJsonLayer({ data: geojson, paint: { color: 'red' } });
// Add styled by feature property layer with selection behavior
webMap.addGeoJsonLayer({
data: geojson,
paint: function (feature) {
return { color: feature.properties.color, opacity: 0.5 }
},
selectedPaint: function (feature) {
return { color: feature.properties.selcolor, opacity: 1 }
},
selectable: true,
multiselect: true
});
// Add marker layer styled with use [Icons](icons)
webMap.addGeoJsonLayer({ data: geojson, paint: webMap.getIcon({ color: 'orange' })});
// work with added layer
const layer = webMap.addGeoJsonLayer({ data: geojson, id: 'my_layer_name'});
// access layer by id
webMap.showLayer('my_layer_name');
// or access layer by instance
webMap.showLayer(layer);
Optional adapter: LayerAdapterDefinition<K>Shortcut for addLayer to create TileLayer adapter
Registration of map layer.
webMap.addLayer('TILE', options).then((layer) => webMap.showLayer(layer));
webMap.addLayer(CustomLayerAdapter, options);
The name of layer adapter from MapAdapter.layerAdapters. May be custom object or class implemented by MainLayerAdapter.
Specific options for given adapter
Optional order: numberPush new the GeoJSON features into given vector layer.
const layer = webMap.addLayer('GEOJSON', {data: geojson_features_5}).then((layer) => {
console.log(layer.getLayers().length) // > 5;
webMap.addLayerData(layer, geojson_features_3);
console.log(layer.getLayers().length) // > 8;
});
Optional order: numberAdd any (style, vector, webmap) NGW layer by resource definition.
// Add raster layer resourceId is the style of 4004 layer
ngwMap.addNgwLayer({ resource: 4005 });
// Add vector data from layer GEOJSON source
ngwMap.addNgwLayer({
resource: 4038,
adapter: 'GEOJSON',
adapterOptions: { paint: { color: 'red' } }
});
set layer identification parameters and render method.
Shortcut for addLayer to create TileLayer adapter
use cancelPromises instead
Rest ...args: PromiseGroup[]Remove from vector layer all features. it is possible to remove only some objects if you specify a callback function.
const layer = webMap.addLayer('GEOJSON', {data: geojson}).then((layer) => {
webMap.clearLayerData(layer, (feture) => feture.id === 42);
webMap.clearLayerData(layer);
});
Optional cb: ((feature) => boolean)Creating a universal map layout control element. Can be used with any map adapter.
const control = webMap.createControl({
onAdd() {
return document.createElement('div');
}
});
Optional options: CreateControlOptionsCreate any toggler control button
const toggleControl = ngwMap.createToggleControl({
getStatus: () => webMap.isLayerVisible('any-layer-id'),
onClick: (status) => ngwMap.toggleLayer('webmap', status),
html: {
on: 'ON',
off: 'OFF'
},
title: 'Toggle layer visibility'
});
webMap.addControl(toggleControl, 'top-right');
Options for control layout customization and assigning a callback function
Optional requestOptions: NgwFeatureRequestOptions<FeatureProperties>Hide features from a vector layer using a callback function.
const layer = webMap.addLayer('GEOJSON', {data: geojson}).then((layer) => {
webMap.filterLayer(layer, ({feature}) => feature.id === '42');
});
Sets a map view that contains the given geographical bounds.
// Whole world
webMap.fitBounds([0, -90, 180, 90]);
Array of coordinates, measured in degrees, in [west, south, east, north] order.
Optional options: FitOptionsMove map to layer. If the layer is NGW resource, extent will be received from the server
const ngwLayer = ngwMap.addNgwLayer({ id: 'ngw_layer_name', resource: 4005 });
ngwMap.fitLayer(ngwLayer);
ngwMap.fitLayer('ngw_layer_name');
Optional options: FitOptionsReturns the map's geographical centerpoint.
lngLat Array of two numbers representing longitude and latitude of the center of the map view.
// Mount Everest 27° 59′ 17″ N, 86° 55′ 31″ E
webMap.getCenter(); // [86.925278, 27.988056]
Get instance of registered control
Any registered control string name
Optional options: MapControls[K]Custom control options
Checking the status of any asynchronous operation
var webMap = new WebMap(options);
webMap.getEventStatus('create'); // false
webMap.emitter.on('create', function () {
webMap.getEventStatus('create'); // true
})
The name of the event whose status is checked
use fetchIdentifyGeoJson instead
Helper method to return added layer object by any definition type.
Helper method to return added layer identificator by any definition type.
use fetchNgwLayerFeature instead
use fetchNgwLayerFeatures instead
use fetchNgwLayerItem instead
use fetchNgwLayerItems instead
Hide added layer on the map by it definition.
Check if given layer is baselayer
Check if the given layer on the map
Optional events: LocationEventshelper method to wait for events to load. By default, card creation is tracked
var webMap = new WebMap(options);
webMap.onLoad().then(function () {
webMap.getEventStatus('create'); // true
})
// use async/await syntax
async function () {
await webMap.onLoad();
doSomething();
}
The name of the event whose status is checked
Optional cb: ((mapAdapter) => void)Optional options: FilterOptions<{ Instance of WEB-GIS framework control. What is returned by the create method
Remove specific layer from map and memory by its definition.
Remove all layer from map and memory.
Optional allowCb: ((layer, adapter) => boolean)Mark the layer as selected. If the adapter is a vector layer and supports data selection, you can pass a callback function to specify which data will be selected.
const layer = webMap.addLayer('GEOJSON', {data: geojson}).then((layer) => {
webMap.selectLayer(layer, ({feature}) => feature.id === '42');
});
Optional findFeatureFun: DataLayerFilter<Feature<Geometry, GeoJsonProperties>, any>Set the center of the current view.
// Mount Everest 27° 59′ 17″ N, 86° 55′ 31″ E
webMap.setCenter([86.925278, 27.988056]);
Array of two numbers representing longitude and latitude of the center of the map view.
Set the cursor icon to be displayed when hover icon on the map container.
Available cursor name from https://developer.mozilla.org/ru/docs/Web/CSS/cursor
Sets the GeoJSON data for given vector layer.
const layer = webMap.addLayer('GEOJSON').then((layer) => {
webMap.setLayerData(layer, geojson);
});
Set transparency for a given layer by number from 0 to 1
Sets the view of the map geographical center and zoom
// Mount Everest 27° 59′ 17″ N, 86° 55′ 31″ E
webMap.setView([86.925278, 27.988056], 12)
Optional zoom: numberThe zoom level to set (0-24).
Show added layer on the map by it definition.
Change added layer visibility on the map by given status or inverse current status.
webMap.addLayer('TILE', {id: 'my_layer', url: ''}).then((layer) => {
webMap.toggleLayer(layer, true);
webMap.toggleLayer('my_layer', false);
webMap.toggleLayer('my_layer');
webMap.isLayerVisible(layer); // true
});
Optional status: booleanUnselect the given layer. If the adapter is a vector layer and supports data selection, you can pass a callback function to specify which data will be unselected.
const layer = webMap.addLayer('GEOJSON', {data: geojson}).then((layer) => {
webMap.unSelectLayer(layer, ({feature}) => feature.id === '42');
});
Optional findFeatureFun: DataLayerFilter<Feature<Geometry, GeoJsonProperties>, any>use fitLayer instead
Static getGenerated using TypeDoc
Base class containing the logic of interaction WebMap with NextGIS services.
Example