I've an array of locations: {'place1', 'place2', 'place3'} *// these are addresses
Now assume that there is a new location: 'place4'.
I want to detect which one is nearest to 'place4'....comparing from above array of locations....
i.e. tracking nearest location of a point from array of locations...(By using Google Map APIs)..
psuedo code:
foreach(var item in array)
{
var i = TrackNearestLocationByGoogleMapAPIs(item);
if(i is nerest)
{
print(i); and go out of loop...
}
}
There is no API-call to do what you want. You have to calculate the distance yourself with the Haversine formula as seen here: http://www.movable-type.co.uk/scripts/latlong.html
I don't think Google Maps API v3 provides a simple mechanism to do this. You might be able to retrieve the latitude and longitude of each location and figure out which point is the closest from that data.
Related
I use the here PlacesServices to retrieve information what's around me. Often I get results that are quite ambiguous / duplicate because outdated data appears to be in the result set that reduces the quality quite significantly. How can we feed back changes to the community or how and when does here get updates for those categories, e.g. restaurants or petrol-stations?
Is there a way to dedup?
This is a good example for 3/6 duplicates (same petrol station) since the chain changed some time ago dependent of the direction on the highway.
https://places.ls.hereapi.com/places/v1/places/276u1jne-8c62ebd6159c441eba290df4efdcfd1d;context=Zmxvdy1pZD02ZWQ0YzViNS0wMzgxLTUxZDAtOTg2ZC00NjQ3YTVjNWJhYTJfMTU3NTY2NjU1MTYwM18wXzE1NCZyYW5rPTI
https://places.ls.hereapi.com/places/v1/places/276u1jne-3c240a265c6e48d698a400b7d8738202;context=Zmxvdy1pZD02ZWQ0YzViNS0wMzgxLTUxZDAtOTg2ZC00NjQ3YTVjNWJhYTJfMTU3NTY2NjU1MTYwM18wXzE1NCZyYW5rPTQ
3 chains for a single petrol station
Finally, is there a solution how I'd only obtain those in my travel direction?
var query = {"in": lat +"," + lng +";r="+distance*1000,"cat" : categories +",pretty"};
let entryPoint = H.service.PlacesService.EntryPoint;
await this.places.request(entryPoint.EXPLORE, query,
function(response) {
values = response.results.items;
}, function(resp) {
console.log('ERROR: '+resp);
});
Best regards and many thanks in advance
O.
In general the feedback related to HERE Map data can be reported by either the Map Feedback API , the details on the API are available on the documentation page , or The Online Tool HERE Map Creator could be used.
With respect to retrieving POIs, it is possible to request POIs along the route using the "browse/by-corridor" (documentation) end point where the route shape and a radius could be provided as a corridor. It should be noted however the API does not consider the heading direction of the route and may return POIs on the other side of a road. Example :
https://places.ls.hereapi.com/places/v1/browse/by-corridor?route=[52.5199356,13.3866272|52.5100899,13.2816896|52.4351807,13.1935196|52.4107285,13.1964502|52.38871,13.1557798|52.3727798,13.1491003|52.3737488,13.1154604|52.3875198,13.0872202|52.4029388,13.0706196|52.4105797,13.0755529]&apiKey=API_KEY
I'm trying to use "location" parameter for queryautocomplete command in Google Maps API. But whatever coordinates I give, it returns the same results. I just need to get search suggestions of places nearby the location coordinates. Here is query example:
https://maps.googleapis.com/maps/api/place/queryautocomplete/json?input=%D0%BF%D1%80%D0%BE%D1%81%D0%BF%D0%B5%D0%BA%D1%82&key=*******&location=53.2415041,50.22124629999996&language=ru
**** is key ID
Does anybody know how to solve it?
дружба
define a radius too.
Currently you get a place in moskow as first result, although the location is in samara(but the returned places are more prominent , e.g. mir prospect in moscow)
Sample request with radius a radius of 50km:
https://maps.googleapis.com/maps/api/place/queryautocomplete/json?input=%D0%BF%D1%80%D0%BE%D1%81%D0%BF%D0%B5%D0%BA%D1%82&location=53.2415041,50.22124629999996&radius=50000&key=yourkey
First result: lenin prospect, samara
How to get longitude and latiitude of the point from Mapcomponent in codenameone when user click on certain on the component ?
I have to take user's location(longitude , latitude ,...) when user double click on map and please suggest me how to do it?
You can use getCoordFromPosition(x, y) which will return a Coord object from which you can extract the lat/lon values. Notice that you can also use the new native maps API which is a bit different http://www.codenameone.com/3/post/2014/03/mapping-natively.html
I am trying to create a Store Locator with the Google API, very similar to the one in the Google examples here:
http://storelocator.googlecode.com/git/examples/panel.html
However I've hit a wall trying to get the Store Locator API to get the user's position through Geolocation, so when I click on Get Direction in the infowindow I get directions to the user position; instead of having to type my address in the: Where are you? Panel box.
In the documentation what I have seen is that geolocation is a boolean in the View Option that is set to True by default. But this does not solve my problem.
Does anyone have any idea on how to do this?
seems that the googlecode page you said is no longer exist. So I can't give any further insight about what you want to make.
However, by your description, Luckily I made similar site few months ago. It is on Grocery Store Near Me .
The concept of Geolocation is an HTML5 (actually W3C) Geolocation API which is now already embed in most modern browser. It is an API which you can obtain user's location (latitude, longitude, altitude, and accuracy).
you can call it with simply
navigator.geolocation.getCurrentPosition(success, error, geo_options);
Success and error is a callback function in which you can define.
In my case, the function looks like these
function success(position) {
var latitude = position.coords.latitude;
var longitude = position.coords.longitude;
// use the lat and long to call function to fetch an API through AJAX
fetchStoreData(latitude, longitude);
}
In the Store Locator schema (like mine in Grocery Store Near Me), Geolocation is used to obtains user lat and long. The lat and long, then send to server via AJAX to get data about nearby store location.
The server serve an API in which accept lat and long as parameter, then fetch the store data (either using database, or other external API like foursquare), then you can display it either on list, or on a maps.
We've implemented a search box and google maps on our page to allow customers to perform searches based on places queries, and so far it's working well. However, using TextSearch we almost always get 20 results (unless it's a specific point). What we prefer though, is to return a set of results that makes more sense to a user based on their search (i.e. if they're searching for churches within a zipcode, we shouldn't show churches outside the zip code).
I know we can bias our results based on location and radius, and even restrict results based on location / radius using NearbySearch.
However, our customers are national users who may be searching in any area in the world, so we're not sure, until the user searches, what location and radius to set as a restriction. I'd like to determine that dynamically based on their query.
For example, in Google Maps if you search for "Churches near 30319" you get a much more localized result set than "Churches near Georgia"
Churches near 30319:
https://maps.google.com/maps?q=churches+near+30319&hl=en&sll=33.772251,-84.296934&sspn=0.049158,0.082312&hq=churches&hnear=Atlanta,+Georgia+30319&t=m&z=14
Churches near Georgia:
https://maps.google.com/maps?q=churches+near+Georgia&hl=en&sll=33.870438,-84.332304&sspn=0.049102,0.082312&hq=churches&hnear=Georgia&t=m&z=8
I've tested doing a separate query using geocode to get the single-point location of the query. i.e.
getGeneralVicinity = ->
address = $('#address').val()
window.oneq.geocode.geocoder.geocode
address: address,
(results, status) ->
if status is google.maps.GeocoderStatus.OK
console.log(results[0].types)
It seems by possibly finding the type of the geocode result (i.e locality) we could determine a radius and use the geometry.location for the location bounds. Unfortunately, it's not consistent, and if a user only searches for "churches", this doesn't give us the desired results.
Any help would be greatly appreciated.
You almost had it. I will refer to the Geocoding API as its JSON feed rather than the Google implementation of it, so detail will come straight from the source. There are some very interesting parameters that come back when geocoding something. Try it:
Georgia: http://maps.googleapis.com/maps/api/geocode/json?address=georgia&sensor=true
30319:http://maps.googleapis.com/maps/api/geocode/json?address=30319&sensor=true
Both of the second-tier address components are Georgia. However, there are a few differing parameters, and the one you want is geometry. This indicates the shape of the area.
Take, for example, the 30319 request. You will get as bounds:
"bounds" : {
"northeast" : {
"lat" : 33.9203610,
"lng" : -84.30943599999999
},
"southwest" : {
"lat" : 33.83286890,
"lng" : -84.35826589999999
}
},
"location" : {
"lat" : 33.87309460,
"lng" : -84.33842899999999
},
This tells you three things:
The corners of the bounding box
The centre of the box (which will be the intersection of the vertex lines)
This allows you to compute the maximum distance from your centre, which you can then feed back into your google places API search as radius. Conversion from lat/long to distance is trivial: it's called the orthodromic path. Two formulas exist - one for small distances (Haversine's formula), the other for large distances (this). Someone wrote a calculator for these: http://williams.best.vwh.net/gccalc.htm . You'll quickly see that the bounding box for 30319 spans 10km, whilst the georgia one spans almost 700 (which would require multiple Google Places requests to match).
Let me know if this wasn't clear and I'll elaborate further.