Roads API इकट्ठा किए जा सकने वाले ज़्यादा से ज़्यादा 100 जीपीएस पॉइंट इस्तेमाल करता है यह रूट पर होता है और डेटा का समान सेट देता है, जिसमें सबसे ज़्यादा संभावना है कि वाहन किस रास्ते से गुज़र रहा था. वैकल्पिक रूप से, आप अनुरोध कर सकते हैं पॉइंट इंटरपोलेट किए जाते हैं, जिससे एक ऐसा पाथ बन जाता है जो ज्यामिति है.
अनुरोध
सड़क पर स्नैप करने का अनुरोध एचटीटीपीएस से भेजा जाना चाहिए. साथ ही, यह इस तरह का होता है:
https://roads.googleapis.com/v1/snapToRoads?parameters&key=YOUR_API_KEY
Required parameters
path
The path to be snapped. The path parameter accepts a list of latitude/longitude pairs. Latitude and longitude values should be separated by commas. Coordinates should be separated by the pipe character: "|". For example:
path=60.170880,24.942795|60.170879,24.942796|60.170877,24.942796
.Note: The snapping algorithm works best for points that are not too far apart. If you observe odd snapping behavior, try creating paths that have points closer together. To ensure the best snap-to-road quality, you should aim to provide paths on which consecutive pairs of points are within 300m of each other. This will also help in handling any isolated, long jumps between consecutive points caused by GPS signal loss, or noise.
Optional parameters
interpolate
Whether to interpolate a path to include all points forming the full road-geometry. When true, additional interpolated points will also be returned, resulting in a path that smoothly follows the geometry of the road, even around corners and through tunnels. Interpolated paths will most likely contain more points than the original path. Defaults to
false
.
उदाहरण
नीचे दिए गए अनुरोध से, बताए गए पॉइंट सड़क की ज्यामिति पर स्नैप हो जाएंगे. यह
किसी सर्कुलर सड़क के बाद मौजूद डेटा का कोई सेट; सेटिंग interpolate=true
सुनिश्चित करें कि वापस की गई ज्यामिति सड़क की वक्रता से मेल खाए. के साथ
interpolate=false
, जोड़ा गया रास्ता अब भी सड़क के साथ-साथ चलता है, लेकिन
जिससे पॉलीलाइन उतनी स्मूद नहीं होगी.
URL
https://roads.googleapis.com/v1/snapToRoads ?interpolate=true &path=-35.27801%2C149.12958%7C-35.28032%2C149.12907%7C-35.28099%2C149.12929%7C-35.28144%2C149.12984%7C-35.28194%2C149.13003%7C-35.28282%2C149.12956%7C-35.28302%2C149.12881%7C-35.28473%2C149.12836 &key=YOUR_API_KEY
cURL
curl -L -X GET 'https://roads.googleapis.com/v1/snapToRoads?path=-35.27801%2C149.12958%7C-35.28032%2C149.12907%7C-35.28099%2C149.12929%7C-35.28144%2C149.12984%7C-35.28194%2C149.13003%7C-35.28282%2C149.12956%7C-35.28302%2C149.12881%7C-35.28473%2C149.12836&interpolate=true&key=YOUR_API_KEY'
जवाब
हर मान्य अनुरोध के लिए, Roads API को अनुरोध वाले यूआरएल में दिखाया जाएगा, जैसे कि नीचे दिया गया JSON रिस्पॉन्स.
{ "snappedPoints": [ { "location": { "latitude": -35.27800489993019, "longitude": 149.129531998742 }, "originalIndex": 0, "placeId": "ChIJr_xl0GdNFmsRsUtUbW7qABM", }, { "location": { "latitude": -35.2784195, "longitude": 149.12946589999999 }, "placeId": "ChIJr_xl0GdNFmsRsUtUbW7qABM", }, { "location": { "latitude": -35.2784195, "longitude": 149.12946589999999 }, "placeId": "ChIJ6aXGemhNFmsRZE_zHqhmrG4", }, { "location": { "latitude": -35.2792731, "longitude": 149.12933809999998 }, "placeId": "ChIJ6aXGemhNFmsRZE_zHqhmrG4", }, { "location": { "latitude": -35.2792731, "longitude": 149.12933809999998 }, "placeId": "ChIJTcTdZ2hNFmsRXokM4mWCWfk", }, { "location": { "latitude": -35.279557, "longitude": 149.1292973 }, "placeId": "ChIJTcTdZ2hNFmsRXokM4mWCWfk", }, { "location": { "latitude": -35.279557, "longitude": 149.1292973 }, "placeId": "ChIJiUfNQmhNFmsRSsAI-1m6y1g", }, { "location": { "latitude": -35.279610999999996, "longitude": 149.1292889 }, "placeId": "ChIJiUfNQmhNFmsRSsAI-1m6y1g", }, { "location": { "latitude": -35.2796484, "longitude": 149.1292791 }, "placeId": "ChIJiUfNQmhNFmsRSsAI-1m6y1g", }, { "location": { "latitude": -35.2796484, "longitude": 149.1292791 }, "placeId": "ChIJ_RyFQ2hNFmsRoHJAbW7qABM", }, { "location": { "latitude": -35.279947299999996, "longitude": 149.1291894 }, "placeId": "ChIJ_RyFQ2hNFmsRoHJAbW7qABM", }, { "location": { "latitude": -35.279947299999996, "longitude": 149.1291894 }, "placeId": "ChIJOyypT2hNFmsRZBtscGL0htw", }, { "location": { "latitude": -35.280323564795005, "longitude": 149.1290903128365 }, "originalIndex": 1, "placeId": "ChIJOyypT2hNFmsRZBtscGL0htw", }, { "location": { "latitude": -35.2803426, "longitude": 149.12908529999999 }, "placeId": "ChIJOyypT2hNFmsRZBtscGL0htw", }, { "location": { "latitude": -35.2803426, "longitude": 149.12908529999999 }, "placeId": "ChIJr8xRTGhNFmsRzMb-rxgjspc", }, { "location": { "latitude": -35.280409899999995, "longitude": 149.1290699 }, "placeId": "ChIJr8xRTGhNFmsRzMb-rxgjspc", }, { "location": { "latitude": -35.28048179999999, "longitude": 149.129062 }, "placeId": "ChIJr8xRTGhNFmsRzMb-rxgjspc", }, { "location": { "latitude": -35.2805541, "longitude": 149.1290623 }, "placeId": "ChIJr8xRTGhNFmsRzMb-rxgjspc", }, { "location": { "latitude": -35.280626, "longitude": 149.1290712 }, "placeId": "ChIJr8xRTGhNFmsRzMb-rxgjspc", }, { "location": { "latitude": -35.280626, "longitude": 149.1290712 }, "placeId": "ChIJv5r0smlNFmsR5nunau79Fv4", }, { "location": { "latitude": -35.280695099999996, "longitude": 149.12908489999998 }, "placeId": "ChIJv5r0smlNFmsR5nunau79Fv4", }, { "location": { "latitude": -35.2807629, "longitude": 149.1291046 }, "placeId": "ChIJv5r0smlNFmsR5nunau79Fv4", }, { "location": { "latitude": -35.2808294, "longitude": 149.1291306 }, "placeId": "ChIJv5r0smlNFmsR5nunau79Fv4", }, { "location": { "latitude": -35.2809064, "longitude": 149.1291693 }, "placeId": "ChIJv5r0smlNFmsR5nunau79Fv4", }, { "location": { "latitude": -35.280968200000004, "longitude": 149.129208 }, "placeId": "ChIJv5r0smlNFmsR5nunau79Fv4", }, { "location": { "latitude": -35.28101395754623, "longitude": 149.1292430025548 }, "originalIndex": 2, "placeId": "ChIJv5r0smlNFmsR5nunau79Fv4", }, { "location": { "latitude": -35.28103840000001, "longitude": 149.1292617 }, "placeId": "ChIJv5r0smlNFmsR5nunau79Fv4", }, { "location": { "latitude": -35.2810936, "longitude": 149.1293121 }, "placeId": "ChIJv5r0smlNFmsR5nunau79Fv4", }, { "location": { "latitude": -35.2810979, "longitude": 149.1293176 }, "placeId": "ChIJv5r0smlNFmsR5nunau79Fv4", }, { "location": { "latitude": -35.2810979, "longitude": 149.1293176 }, "placeId": "ChIJpYMSrmlNFmsRXkCoIkZxgBg", }, { "location": { "latitude": -35.281152399999996, "longitude": 149.1294256 }, "placeId": "ChIJpYMSrmlNFmsRXkCoIkZxgBg", }, { "location": { "latitude": -35.281152399999996, "longitude": 149.1294256 }, "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA", }, { "location": { "latitude": -35.2811784, "longitude": 149.1294706 }, "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA", }, { "location": { "latitude": -35.2812258, "longitude": 149.1295413 }, "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA", }, { "location": { "latitude": -35.2812771, "longitude": 149.12960759999999 }, "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA", }, { "location": { "latitude": -35.281332, "longitude": 149.1296695 }, "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA", }, { "location": { "latitude": -35.2813904, "longitude": 149.12972670000002 }, "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA", }, { "location": { "latitude": -35.281451700000005, "longitude": 149.1297788 }, "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA", }, { "location": { "latitude": -35.28146506991143, "longitude": 149.12978858234607 }, "originalIndex": 3, "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA", }, { "location": { "latitude": -35.28151580000001, "longitude": 149.1298257 }, "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA", }, { "location": { "latitude": -35.28158259999999, "longitude": 149.129867 }, "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA", }, { "location": { "latitude": -35.281666099999995, "longitude": 149.1299091 }, "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA", }, { "location": { "latitude": -35.2817377, "longitude": 149.1299379 }, "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA", }, { "location": { "latitude": -35.281810899999996, "longitude": 149.1299602 }, "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA", }, { "location": { "latitude": -35.281884999999996, "longitude": 149.1299765 }, "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA", }, { "location": { "latitude": -35.28194399606459, "longitude": 149.1299842294294 }, "originalIndex": 4, "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA", }, { "location": { "latitude": -35.281959799999996, "longitude": 149.12998629999998 }, "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA", }, { "location": { "latitude": -35.282035199999996, "longitude": 149.1299895 }, "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA", }, { "location": { "latitude": -35.2821254, "longitude": 149.1299851 }, "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA", }, { "location": { "latitude": -35.282199999999996, "longitude": 149.1299743 }, "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA", }, { "location": { "latitude": -35.2822739, "longitude": 149.1299573 }, "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA", }, { "location": { "latitude": -35.2823468, "longitude": 149.129934 }, "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA", }, { "location": { "latitude": -35.2824178, "longitude": 149.1299043 }, "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA", }, { "location": { "latitude": -35.2824379, "longitude": 149.1298945 }, "placeId": "ChIJ601MoWlNFmsR5mvkfPp2ovA", }, { "location": { "latitude": -35.2824379, "longitude": 149.1298945 }, "placeId": "ChIJe9LPnWlNFmsR7mJw8mYHwG0", }, { "location": { "latitude": -35.282472999999996, "longitude": 149.1298835 }, "placeId": "ChIJe9LPnWlNFmsR7mJw8mYHwG0", }, { "location": { "latitude": -35.2825375, "longitude": 149.1298525 }, "placeId": "ChIJe9LPnWlNFmsR7mJw8mYHwG0", }, { "location": { "latitude": -35.28257309999999, "longitude": 149.1298319 }, "placeId": "ChIJe9LPnWlNFmsR7mJw8mYHwG0", }, { "location": { "latitude": -35.28257309999999, "longitude": 149.1298319 }, "placeId": "ChIJaUpThGlNFmsRMHWxoH7EOsc", }, { "location": { "latitude": -35.282665400000006, "longitude": 149.12974459999998 }, "placeId": "ChIJaUpThGlNFmsRMHWxoH7EOsc", }, { "location": { "latitude": -35.28274030000001, "longitude": 149.1296645 }, "placeId": "ChIJaUpThGlNFmsRMHWxoH7EOsc", }, { "location": { "latitude": -35.282809799999995, "longitude": 149.12957799999998 }, "placeId": "ChIJaUpThGlNFmsRMHWxoH7EOsc", }, { "location": { "latitude": -35.28282136229385, "longitude": 149.12956142620385 }, "originalIndex": 5, "placeId": "ChIJaUpThGlNFmsRMHWxoH7EOsc", }, { "location": { "latitude": -35.2828744, "longitude": 149.1294854 }, "placeId": "ChIJaUpThGlNFmsRMHWxoH7EOsc", }, { "location": { "latitude": -35.282922299999996, "longitude": 149.1294044 }, "placeId": "ChIJaUpThGlNFmsRMHWxoH7EOsc", }, { "location": { "latitude": -35.282931500000004, "longitude": 149.1293876 }, "placeId": "ChIJaUpThGlNFmsRMHWxoH7EOsc", }, { "location": { "latitude": -35.2830263, "longitude": 149.1291788 }, "placeId": "ChIJaUpThGlNFmsRMHWxoH7EOsc", }, { "location": { "latitude": -35.2830263, "longitude": 149.1291788 }, "placeId": "ChIJyd3JiWlNFmsR9RUq2ySTTZQ", }, { "location": { "latitude": -35.283054, "longitude": 149.1290996 }, "placeId": "ChIJyd3JiWlNFmsR9RUq2ySTTZQ", }, { "location": { "latitude": -35.2830794, "longitude": 149.1290094 }, "placeId": "ChIJyd3JiWlNFmsR9RUq2ySTTZQ", }, { "location": { "latitude": -35.2830794, "longitude": 149.1290094 }, "placeId": "ChIJWSb8ImpNFmsRp_4JAxJFE1A", }, { "location": { "latitude": -35.28313383700836, "longitude": 149.12893500604946 }, "originalIndex": 6, "placeId": "ChIJWSb8ImpNFmsRp_4JAxJFE1A", }, { "location": { "latitude": -35.283134499999996, "longitude": 149.12893409999998 }, "placeId": "ChIJWSb8ImpNFmsRp_4JAxJFE1A", }, { "location": { "latitude": -35.283190399999995, "longitude": 149.1288668 }, "placeId": "ChIJWSb8ImpNFmsRp_4JAxJFE1A", }, { "location": { "latitude": -35.2832503, "longitude": 149.1288041 }, "placeId": "ChIJWSb8ImpNFmsRp_4JAxJFE1A", }, { "location": { "latitude": -35.2833133, "longitude": 149.1287463 }, "placeId": "ChIJWSb8ImpNFmsRp_4JAxJFE1A", }, { "location": { "latitude": -35.2833794, "longitude": 149.128694 }, "placeId": "ChIJWSb8ImpNFmsRp_4JAxJFE1A", }, { "location": { "latitude": -35.283448299999996, "longitude": 149.128647 }, "placeId": "ChIJWSb8ImpNFmsRp_4JAxJFE1A", }, { "location": { "latitude": -35.2835199, "longitude": 149.1286054 }, "placeId": "ChIJWSb8ImpNFmsRp_4JAxJFE1A", }, { "location": { "latitude": -35.2835934, "longitude": 149.1285699 }, "placeId": "ChIJWSb8ImpNFmsRp_4JAxJFE1A", }, { "location": { "latitude": -35.283668899999995, "longitude": 149.12854059999998 }, "placeId": "ChIJWSb8ImpNFmsRp_4JAxJFE1A", }, { "location": { "latitude": -35.28372649999999, "longitude": 149.1285237 }, "placeId": "ChIJWSb8ImpNFmsRp_4JAxJFE1A", }, { "location": { "latitude": -35.28386179999999, "longitude": 149.12849319999998 }, "placeId": "ChIJWSb8ImpNFmsRp_4JAxJFE1A", }, { "location": { "latitude": -35.2839978, "longitude": 149.1284682 }, "placeId": "ChIJWSb8ImpNFmsRp_4JAxJFE1A", }, { "location": { "latitude": -35.2840205, "longitude": 149.12846779999998 }, "placeId": "ChIJWSb8ImpNFmsRp_4JAxJFE1A", }, { "location": { "latitude": -35.2840205, "longitude": 149.12846779999998 }, "placeId": "ChIJZe8tFWpNFmsR4brZ1vldk2E", }, { "location": { "latitude": -35.2840524, "longitude": 149.12845969999998 }, "placeId": "ChIJZe8tFWpNFmsR4brZ1vldk2E", }, { "location": { "latitude": -35.284341500000004, "longitude": 149.1284124 }, "placeId": "ChIJZe8tFWpNFmsR4brZ1vldk2E", }, { "location": { "latitude": -35.2843875, "longitude": 149.1284034 }, "placeId": "ChIJZe8tFWpNFmsR4brZ1vldk2E", }, { "location": { "latitude": -35.2843875, "longitude": 149.1284034 }, "placeId": "ChIJVx7Ta2pNFmsRx9OI9CnN5tI", }, { "location": { "latitude": -35.2845916, "longitude": 149.1283726 }, "placeId": "ChIJVx7Ta2pNFmsRx9OI9CnN5tI", }, { "location": { "latitude": -35.2845916, "longitude": 149.1283726 }, "placeId": "ChIJtWxAZmpNFmsRlbUCkc6VtnA", }, { "location": { "latitude": -35.28459730000001, "longitude": 149.1283703 }, "placeId": "ChIJtWxAZmpNFmsRlbUCkc6VtnA", }, { "location": { "latitude": -35.284728747199374, "longitude": 149.12834860726772 }, "originalIndex": 7, "placeId": "ChIJtWxAZmpNFmsRlbUCkc6VtnA", }, ], }
इसके लिए, इस स्कीमा का इस्तेमाल किया जाता है.
SnapToRoadsResponse
Field | Required | Type | Description |
---|---|---|---|
| optional | Array<SnappedPoint> | An array of snapped points. See SnappedPoint for more information. |
| optional | string | A string containing a user-visible warning. |
SnappedPoint
Field | Required | Type | Description |
---|---|---|---|
| required | LatitudeLongitudeLiteral | See LatitudeLongitudeLiteral for more information. |
| required | string | A unique identifier for a place. All place IDs returned by the Roads API correspond to road segments. |
| optional | number |
An integer that indicates the corresponding value in the original
request. Each value in the request should map to a snapped value in
the response. However, if you've set interpolate=true or if you're
using nearest roads, then it's possible that the response will
contain more coordinates than the request. Interpolated values will
not have an |
LatitudeLongitudeLiteral
An object describing a specific location with Latitude and Longitude in decimal degrees.
Field | Required | Type | Description |
---|---|---|---|
| required | number | Latitude in decimal degrees |
| required | number | Longitude in decimal degrees |
डेमो
- वाहन का ट्रैक बनाने के लिए, मैप पर क्लिक करें. ध्यान दें कि अगर पॉइंट बहुत दूर हैं, तो हो सकता है कि वे सही से स्नैप न कर पाएं.
- अपना ट्रैक सड़क पर स्नैप करने के लिए डबल क्लिक करें.
फ़ुल स्क्रीन का यह उदाहरण देखें.
JavaScript
var apiKey = 'YOUR_API_KEY_HERE'; var map; var drawingManager; var placeIdArray = []; var polylines = []; var snappedCoordinates = []; function initialize() { var mapOptions = { zoom: 17, center: {lat: -33.8667, lng: 151.1955,} }; map = new google.maps.Map(document.getElementById('map'), mapOptions); // Adds a Places search box. Searching for a place will center the map on that // location. map.controls[google.maps.ControlPosition.RIGHT_TOP].push( document.getElementById('bar')); var autocomplete = new google.maps.places.Autocomplete( document.getElementById('autoc')); autocomplete.bindTo('bounds', map); autocomplete.addListener('place_changed', function() { var place = autocomplete.getPlace(); if (place.geometry.viewport) { map.fitBounds(place.geometry.viewport); } else { map.setCenter(place.geometry.location); map.setZoom(17); } }); // Enables the polyline drawing control. Click on the map to start drawing a // polyline. Each click will add a new vertice. Double-click to stop drawing. drawingManager = new google.maps.drawing.DrawingManager({ drawingMode: google.maps.drawing.OverlayType.POLYLINE, drawingControl: true, drawingControlOptions: { position: google.maps.ControlPosition.TOP_CENTER, drawingModes: [ google.maps.drawing.OverlayType.POLYLINE ] }, polylineOptions: { strokeColor: '#696969', strokeWeight: 2, strokeOpacity: 0.3, } }); drawingManager.setMap(map); // Snap-to-road when the polyline is completed. drawingManager.addListener('polylinecomplete', function(poly) { var path = poly.getPath(); polylines.push(poly); placeIdArray = []; runSnapToRoad(path); }); // Clear button. Click to remove all polylines. document.getElementById('clear').addEventListener('click', function(event) { event.preventDefault(); for (var i = 0; i < polylines.length; ++i) { polylines[i].setMap(null); } polylines = []; return false; }); } // Snap a user-created polyline to roads and draw the snapped path function runSnapToRoad(path) { var pathValues = []; for (var i = 0; i < path.getLength(); i++) { pathValues.push(path.getAt(i).toUrlValue()); } $.get('https://roads.googleapis.com/v1/snapToRoads', { interpolate: true, key: apiKey, path: pathValues.join('|') }, function(data) { processSnapToRoadResponse(data); drawSnappedPolyline(); }); } // Store snapped polyline returned by the snap-to-road service. function processSnapToRoadResponse(data) { snappedCoordinates = []; placeIdArray = []; for (var i = 0; i < data.snappedPoints.length; i++) { var latlng = new google.maps.LatLng( data.snappedPoints[i].location.latitude, data.snappedPoints[i].location.longitude); snappedCoordinates.push(latlng); placeIdArray.push(data.snappedPoints[i].placeId); } } // Draws the snapped polyline (after processing snap-to-road response). function drawSnappedPolyline() { var snappedPolyline = new google.maps.Polyline({ path: snappedCoordinates, strokeColor: '#add8e6', strokeWeight: 4, strokeOpacity: 0.9, }); snappedPolyline.setMap(map); polylines.push(snappedPolyline); } $(window).load(initialize);
JavaScript + एचटीएमएल
<!DOCTYPE html> <html> <head> <meta name="viewport" content="initial-scale=1.0, user-scalable=no"> <meta charset="utf-8"> <title>Roads API Demo</title> <style> html, body, #map { height: 100%; margin: 0px; padding: 0px } #panel { position: absolute; top: 5px; left: 50%; margin-left: -180px; z-index: 5; background-color: #fff; padding: 5px; border: 1px solid #999; } #bar { width: 240px; background-color: rgba(255, 255, 255, 0.75); margin: 8px; padding: 4px; border-radius: 4px; } #autoc { width: 100%; box-sizing: border-box; } </style> <script src="https://www.gstatic.com/external_hosted/jquery2.min.js"></script> <script src="https://maps.googleapis.com/maps/api/js?libraries=drawing,places&key=YOUR_API_KEY"></script> <script> var apiKey = 'YOUR_API_KEY_HERE'; var map; var drawingManager; var placeIdArray = []; var polylines = []; var snappedCoordinates = []; function initialize() { var mapOptions = { zoom: 17, center: {lat: -33.8667, lng: 151.1955,} }; map = new google.maps.Map(document.getElementById('map'), mapOptions); // Adds a Places search box. Searching for a place will center the map on that // location. map.controls[google.maps.ControlPosition.RIGHT_TOP].push( document.getElementById('bar')); var autocomplete = new google.maps.places.Autocomplete( document.getElementById('autoc')); autocomplete.bindTo('bounds', map); autocomplete.addListener('place_changed', function() { var place = autocomplete.getPlace(); if (place.geometry.viewport) { map.fitBounds(place.geometry.viewport); } else { map.setCenter(place.geometry.location); map.setZoom(17); } }); // Enables the polyline drawing control. Click on the map to start drawing a // polyline. Each click will add a new vertice. Double-click to stop drawing. drawingManager = new google.maps.drawing.DrawingManager({ drawingMode: google.maps.drawing.OverlayType.POLYLINE, drawingControl: true, drawingControlOptions: { position: google.maps.ControlPosition.TOP_CENTER, drawingModes: [ google.maps.drawing.OverlayType.POLYLINE ] }, polylineOptions: { strokeColor: '#696969', strokeWeight: 2, strokeOpacity: 0.3, } }); drawingManager.setMap(map); // Snap-to-road when the polyline is completed. drawingManager.addListener('polylinecomplete', function(poly) { var path = poly.getPath(); polylines.push(poly); placeIdArray = []; runSnapToRoad(path); }); // Clear button. Click to remove all polylines. document.getElementById('clear').addEventListener('click', function(event) { event.preventDefault(); for (var i = 0; i < polylines.length; ++i) { polylines[i].setMap(null); } polylines = []; return false; }); } // Snap a user-created polyline to roads and draw the snapped path function runSnapToRoad(path) { var pathValues = []; for (var i = 0; i < path.getLength(); i++) { pathValues.push(path.getAt(i).toUrlValue()); } $.get('https://roads.googleapis.com/v1/snapToRoads', { interpolate: true, key: apiKey, path: pathValues.join('|') }, function(data) { processSnapToRoadResponse(data); drawSnappedPolyline(); }); } // Store snapped polyline returned by the snap-to-road service. function processSnapToRoadResponse(data) { snappedCoordinates = []; placeIdArray = []; for (var i = 0; i < data.snappedPoints.length; i++) { var latlng = new google.maps.LatLng( data.snappedPoints[i].location.latitude, data.snappedPoints[i].location.longitude); snappedCoordinates.push(latlng); placeIdArray.push(data.snappedPoints[i].placeId); } } // Draws the snapped polyline (after processing snap-to-road response). function drawSnappedPolyline() { var snappedPolyline = new google.maps.Polyline({ path: snappedCoordinates, strokeColor: '#add8e6', strokeWeight: 4, strokeOpacity: 0.9, }); snappedPolyline.setMap(map); polylines.push(snappedPolyline); } $(window).load(initialize); </script> </head> <body> <div id="map"></div> <div id="bar"> <p class="auto"><input type="text" id="autoc"/></p> <p><a id="clear" href="#">Click here</a> to clear map.</p> </div> </body> </html>