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Visualizing points with arcs
This example uses arcs to show curved point-to-point connections between
airports and the city of Prague. TheArcLayerrenders raised arcs joining pairs of source and target points.
TypeScript
// TODO Use imports when Deck.gl works in more bundlers// https://github.com/visgl/deck.gl/issues/6351#issuecomment-1079424167importtype*asGeoJSONfrom"geojson";// import { ArcLayer} from "deck.gl";// import { GoogleMapsOverlay } from "@deck.gl/google-maps";constArcLayer=deck.ArcLayer;constGoogleMapsOverlay=deck.GoogleMapsOverlay;typeProperties={scalerank:number};typeFeature=GeoJSON.Feature<GeoJSON.Point,Properties>;typeData=GeoJSON.FeatureCollection<GeoJSON.Point,Properties>;constAIRPORTS="https://d2ad6b4ur7yvpq.cloudfront.net/naturalearth-3.3.0/ne_10m_airports.geojson";functioninitMap():void{constmap=newgoogle.maps.Map(document.getElementById("map")asHTMLElement,{center:{lat:50,lng:14},tilt:30,mapId:"90f87356969d889c",zoom:3,});constflightsLayer=newArcLayer({id:"flights",data:AIRPORTS,dataTransform:(d:Data)=>d.features.filter((f)=>f.properties.scalerank<4),getSourcePosition:()=>[14.42076,50.08804],// PraguegetTargetPosition:(f:Feature)=>f.geometry.coordinates,getSourceColor:[0,128,200],getTargetColor:[0,0,80],getWidth:1,});constoverlay=newGoogleMapsOverlay({layers:[flightsLayer],});overlay.setMap(map);}declareglobal{interfaceWindow{initMap:()=>void;}}window.initMap=initMap;
/** Always set the map height explicitly to define the size of the div element* that contains the map.*/#map{height:100%;}/** Optional: Makes the sample page fill the window.*/html,body{height:100%;margin:0;padding:0;}
<html>
<head>
<title>deck.gl ArcLayer</title>
<script src="https://unpkg.com/deck.gl@8.9.22/dist.min.js"></script>
<script src="https://unpkg.com/@deck.gl/google-maps@8.9.22/dist.min.js"></script>
<link rel="stylesheet" type="text/css" href="./style.css" />
<script type="module" src="./index.js"></script>
</head>
<body>
<div id="map"></div>
<!--
The `defer` attribute causes the script to execute after the full HTML
document has been parsed. For non-blocking uses, avoiding race conditions,
and consistent behavior across browsers, consider loading using Promises. See
https://developers.google.com/maps/documentation/javascript/load-maps-js-api
for more information.
-->
<script
src="https://maps.googleapis.com/maps/api/js?key=AIzaSyB41DRUbKWJHPxaFjMAwdrzWzbVKartNGg&callback=initMap&v=weekly"
defer
></script>
</body>
</html>
Git and Node.js are required to run this sample locally. Follow theseinstructionsto install Node.js and NPM. The following commands clone, install dependencies and start the sample application.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-09-04 UTC."],[[["\u003cp\u003eThis example visualizes curved connections between Prague and major airports worldwide using the \u003ccode\u003eArcLayer\u003c/code\u003e from deck.gl.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eArcLayer\u003c/code\u003e is rendered on top of a Google Map, displaying flight paths originating from Prague.\u003c/p\u003e\n"],["\u003cp\u003eThe code utilizes GeoJSON data of airports and filters them based on a scalerank property for visualization.\u003c/p\u003e\n"],["\u003cp\u003eYou can interact with a live version of this example on JSFiddle or clone the sample code for local execution.\u003c/p\u003e\n"]]],[],null,["Visualizing points with arcs\n\nThis example uses arcs to show curved point-to-point connections between\nairports and the city of Prague. The [`ArcLayer`](https://deck.gl/docs/api-reference/layers/arc-layer)\nrenders raised arcs joining pairs of source and target points. \n\nTypeScript \n\n```typescript\n// TODO Use imports when Deck.gl works in more bundlers\n// https://github.com/visgl/deck.gl/issues/6351#issuecomment-1079424167\n\nimport type * as GeoJSON from \"geojson\";\n// import { ArcLayer} from \"deck.gl\";\n// import { GoogleMapsOverlay } from \"@deck.gl/google-maps\";\n\nconst ArcLayer = deck.ArcLayer;\nconst GoogleMapsOverlay = deck.GoogleMapsOverlay;\n\ntype Properties = { scalerank: number };\ntype Feature = GeoJSON.Feature\u003cGeoJSON.Point, Properties\u003e;\ntype Data = GeoJSON.FeatureCollection\u003cGeoJSON.Point, Properties\u003e;\n\nconst AIRPORTS =\n \"https://d2ad6b4ur7yvpq.cloudfront.net/naturalearth-3.3.0/ne_10m_airports.geojson\";\n\nfunction initMap(): void {\n const map = new google.maps.Map(\n document.getElementById(\"map\") as HTMLElement,\n {\n center: { lat: 50, lng: 14 },\n tilt: 30,\n mapId: \"90f87356969d889c\",\n zoom: 3,\n }\n );\n\n const flightsLayer = new ArcLayer({\n id: \"flights\",\n data: AIRPORTS,\n dataTransform: (d: Data) =\u003e\n d.features.filter((f) =\u003e f.properties.scalerank \u003c 4),\n getSourcePosition: () =\u003e [14.42076, 50.08804], // Prague\n getTargetPosition: (f: Feature) =\u003e f.geometry.coordinates,\n getSourceColor: [0, 128, 200],\n getTargetColor: [0, 0, 80],\n getWidth: 1,\n });\n\n const overlay = new GoogleMapsOverlay({\n layers: [flightsLayer],\n });\n\n overlay.setMap(map);\n}\n\ndeclare global {\n interface Window {\n initMap: () =\u003e void;\n }\n}\nwindow.initMap = initMap;https://github.com/googlemaps/js-samples/blob/2683f7366fb27829401945d2a7e27d77ed2df8e5/samples/deckgl-arclayer/index.ts#L8-L60\n```\n| **Note:** Read the [guide](/maps/documentation/javascript/using-typescript) on using TypeScript and Google Maps.\n\nJavaScript \n\n```javascript\n// import { ArcLayer} from \"deck.gl\";\n// import { GoogleMapsOverlay } from \"@deck.gl/google-maps\";\nconst ArcLayer = deck.ArcLayer;\nconst GoogleMapsOverlay = deck.GoogleMapsOverlay;\nconst AIRPORTS =\n \"https://d2ad6b4ur7yvpq.cloudfront.net/naturalearth-3.3.0/ne_10m_airports.geojson\";\n\nfunction initMap() {\n const map = new google.maps.Map(document.getElementById(\"map\"), {\n center: { lat: 50, lng: 14 },\n tilt: 30,\n mapId: \"90f87356969d889c\",\n zoom: 3,\n });\n const flightsLayer = new ArcLayer({\n id: \"flights\",\n data: AIRPORTS,\n dataTransform: (d) =\u003e d.features.filter((f) =\u003e f.properties.scalerank \u003c 4),\n getSourcePosition: () =\u003e [14.42076, 50.08804], // Prague\n getTargetPosition: (f) =\u003e f.geometry.coordinates,\n getSourceColor: [0, 128, 200],\n getTargetColor: [0, 0, 80],\n getWidth: 1,\n });\n const overlay = new GoogleMapsOverlay({\n layers: [flightsLayer],\n });\n\n overlay.setMap(map);\n}\n\nwindow.initMap = initMap;https://github.com/googlemaps/js-samples/blob/2683f7366fb27829401945d2a7e27d77ed2df8e5/dist/samples/deckgl-arclayer/docs/index.js#L7-L38\n```\n| **Note:** The JavaScript is compiled from the TypeScript snippet.\n\nCSS \n\n```css\n/* \n * Always set the map height explicitly to define the size of the div element\n * that contains the map. \n */\n#map {\n height: 100%;\n}\n\n/* \n * Optional: Makes the sample page fill the window. \n */\nhtml,\nbody {\n height: 100%;\n margin: 0;\n padding: 0;\n}\nhttps://github.com/googlemaps/js-samples/blob/2683f7366fb27829401945d2a7e27d77ed2df8e5/dist/samples/deckgl-arclayer/docs/style.css#L7-L24\n```\n\nHTML \n\n```html\n\u003chtml\u003e\n \u003chead\u003e\n \u003ctitle\u003edeck.gl ArcLayer\u003c/title\u003e\n\n \u003cscript src=\"https://unpkg.com/deck.gl@8.9.22/dist.min.js\"\u003e\u003c/script\u003e\n \u003cscript src=\"https://unpkg.com/@deck.gl/google-maps@8.9.22/dist.min.js\"\u003e\u003c/script\u003e\n\n \u003clink rel=\"stylesheet\" type=\"text/css\" href=\"./style.css\" /\u003e\n \u003cscript type=\"module\" src=\"./index.js\"\u003e\u003c/script\u003e\n \u003c/head\u003e\n \u003cbody\u003e\n \u003cdiv id=\"map\"\u003e\u003c/div\u003e\n\n \u003c!-- \n The `defer` attribute causes the script to execute after the full HTML\n document has been parsed. For non-blocking uses, avoiding race conditions,\n and consistent behavior across browsers, consider loading using Promises. See\n https://developers.google.com/maps/documentation/javascript/load-maps-js-api\n for more information.\n --\u003e\n \u003cscript\n src=\"https://maps.googleapis.com/maps/api/js?key=AIzaSyB41DRUbKWJHPxaFjMAwdrzWzbVKartNGg&callback=initMap&v=weekly\"\n defer\n \u003e\u003c/script\u003e\n \u003c/body\u003e\n\u003c/html\u003ehttps://github.com/googlemaps/js-samples/blob/2683f7366fb27829401945d2a7e27d77ed2df8e5/dist/samples/deckgl-arclayer/docs/index.html#L8-L33\n```\n\nTry Sample \n[JSFiddle.net](https://jsfiddle.net/gh/get/library/pure/googlemaps/js-samples/tree/master/dist/samples/deckgl-arclayer/jsfiddle) [Google Cloud Shell](https://ssh.cloud.google.com/cloudshell/editor?cloudshell_git_repo=https%3A%2F%2Fgithub.com%2Fgooglemaps%2Fjs-samples&cloudshell_git_branch=sample-deckgl-arclayer&cloudshell_tutorial=cloud_shell_instructions.md&cloudshell_workspace=.)\n\nClone Sample\n\n\nGit and Node.js are required to run this sample locally. Follow these [instructions](https://docs.npmjs.com/downloading-and-installing-node-js-and-npm) to install Node.js and NPM. The following commands clone, install dependencies and start the sample application. \n\n git clone -b sample-deckgl-arclayer https://github.com/googlemaps/js-samples.git\n cd js-samples\n npm i\n npm start\n\n\nOther samples can be tried by switching to any branch beginning with `sample-`\u003cvar translate=\"no\"\u003eSAMPLE_NAME\u003c/var\u003e. \n\n git checkout sample-\u003cvar translate=\"no\"\u003e\u003cspan class=\"devsite-syntax-nx\"\u003eSAMPLE_NAME\u003c/span\u003e\u003c/var\u003e\n npm i\n npm start"]]
