I need to get all the nearby public transit information within certain distance from a given location. The type of public transit can be either bus, train, etc..
Here is what I meant:
If I use Google Map to query "Transit Stop near a Location (e.g. Bugis Street Singapore)", then it will return us all the nearby Transit Stop that I want. Like the one shown in the picture. But I need its API to get those details out. (such as bus service No, bus stop ID, etc. as shown in the picture). But I couldn't found any.
Here is what I've tried
I have tried using the Google Map Nearby Place API to search for a place with the type of transit_station, bus_station, train_station,etc... But they all return Zero Result. I could only use this API to search for Nearby Place of Interest, but not nearby transit.
I've also check Google Transit API, but I only found API to insert transit data to Google but Not to extract it out. I think Google didn't publicize the transit API yet.
Additional Information
I have check the site Gothere.sg. And confused How? because they able to detect the nearby transit. Is it only because they specify the direction "From-To".
I have read a pretty similar question on Detecting nearby transit. Perhaps It is not yet possible if we use Google APIs.
But nothing is impossible for me
Last Resort
As Last resort, I also check with the provider, publictransport.sg. I hack around with the API. And found out that it can provide me with a transit stop with some coordinate. But it lack a nearby API which found on Google Map.
So one workaround I could think of at the moment, is to use the provider in this case was publictransport.sg which give me the Stop ID and its coordinate. To do this, First, I have to translate the location name using the Google GeoCoding API into Coordinate then I have to create my own nearby calculation to find the nearby station by comparing the searched Coordinate against all the station coordinate that the provider have.
Now, it is possible for me, but very painful :-)
Back to the Question:
Is there a way to retrieve all transit stop data from a given location (either using Google Maps API or Any other API)? and How did u do that?
Thanks
At least thanks for reading my lengthy question. I appreciate any help from you.
Well, you could use the places-API to find the nearest transit-stops, it works fine for me for the given location.
Just do a request with the parameters:
location (latlng-object of the given location)
radius(radius to search for in meters)
types(array of valid types, e.g. ['bus_station','subway_station'])
Checkout the fiddle: http://jsfiddle.net/doktormolle/aZrvs/
For retrieving further details(bus service No, bus stop ID) I don't have any good idea right now.
There should be a way, those data on maps.google.com will be retrieved by using AJAX, so there is a ressource. But as long as there is no public API to fetch those results it would not be legal to use this ressource.
Adding &output=json to your initial query (http://maps.google.com/maps?q=transit%20stop%20near%20New%20Bugis%20Street%20Singapore&output=json), is not a legal way to get this information?
You can still enumerate all of Bus Service Number, Bus Stop ID (Station Names) after getting the google-places-api details, as #Dr.Molle: said.
Open the webpage of detail['result']['url'], and then XPath the string of bus ID list.
Below is an example to get Taipei's bus Info around a location (latitude, longitude). More detail implementation see https://github.com/MikimotoH/gisTools/blob/master/google_place.py
places = get_web_json(
'https://maps.googleapis.com/maps/api/place/nearbysearch/json?' +
'key=%s&location=%f,%f' % (apikey, lat, lng) +
'&rankby=distance&language=zh-TW&types=bus_station')
if places['status'] == 'OK':
for result in places['results']:
placeid = result['place_id']
detail = get_web_json(
'https://maps.googleapis.com/maps/api/place/details/' +
'json?key=%s&placeid=%s' % (apikey, placeid) +
'&language=zh-TW')
station = detail['result']['name']
loc = detail['result']['geometry']['location']
buspage = get_webpage(detail['result']['url'])
tree = lxml.html.document_fromstring(buspage)
bus_elm = tree.xpath("/html/body/div[1]/div/div[4]/div[4]/div/div/div[2]/div/div[2]/div[1]/div[2]/div/div/div[2]/div/table/tr/td")[0]
buses = list(filter(lambda s: len(s.strip()) > 0,
bus_elm.text_content().strip().split()))
yield (station, float(loc['lat']), float(loc['lat']), buses)
The Transitland APIs can answer your question. For example, try using the Transitland v2 REST API stops endpoint like this:
https://transit.land/api/v2/rest/stops?lat=xxx&lon=xxx&radius=1000&apikey=xxx
More information on the endpoint parameters and response at https://www.transit.land/documentation/rest-api/stops
Related
Is there a way by using azure-maps or google-maps to get from longitude and latitude all postal codes and municipalityes that are in range of X kilometers?
I've yet checked the Get Search Nearby of azure, but it returns only points of interests and it is not possible to specify in the API a range in which the data should be get.
In Azure Maps, getting all postal code/municipalities within a specified distance of a location or within an area is not currently available. However, this is something being investigated as a possible future service. Consider submitting this as a feature request here: https://feedback.azure.com/forums/909172-azure-maps
I don't believe Google Maps has any such service either.
I know that google maps's JSON return includes a "formatted_address" that gives you the full readable address but I've tested it on a couple of places with no success, the lat and lng coordinates aren't correct either. If I manually search it using maps.google.com it would be correct so I know the input is specific enough. How can I use the API to do this? What if the input is vague? Can I get a JSON return that includes all possible locations? (i.e. McDonalds in NYC will surely return many coordinates)
example:
http://maps.googleapis.com/maps/api/geocode/json?address=time+square+nyc&sensor=false
this returns the CORRECT coodrinates and full address that I can use.
http://maps.googleapis.com/maps/api/geocode/json?address=amc+loews+boston&sensor=false
this does not. but of course if i just search "amc lowes boston" manually it returns the correct address on google maps.
I think you're looking for Google Maps' Places Library.
Google Maps API has any way to get the street coordinates of an location?
Is simple: I just want to get the nearest street coordinate. To got this i need, for example, all coordinates that compose a street.
Are there something like this?
You may use the directionService.
Pass the given address(or location) as origin and destination to directionsService.route() and use the travelMode DRIVING . The response should contain the nearest street.
Demo: http://jsfiddle.net/doktormolle/W3VGN/
I found this (ReverseGeocoding in v3): https://developers.google.com/maps/documentation/javascript/geocoding#ReverseGeocoding
Since this thread is old I suppose this could be useful.
These answers are all old, and Google has rearranged the maps API significantly since the answers.
In 2018, the best way to turn a location (long, lat) into a "point on road," is to use the snap-to-road or nearest-road service:
https://developers.google.com/maps/documentation/roads/snap
Note that this API charges a cent per API call, and can take up to 100 distinct points per call. If latency and complexity aren't problems, if you need to answer this question on a client, you could build a server that collects up to 100 requests from different clients, makes one request to Google, and then returns the request data back to the appropriate clients. (For this use, make sure to use nearest-road, not snap-to-road.)
Also, currently, Google Maps has a $200 per-month statement credit available, which may make smaller uses of this API not actually end up costing much (or anything at all.)
It is easy to use the Google Maps API to find a specific street address and return the latitude and longitude. For example, link.
However, it appears that typing in the name of a specific location, for example a park, causes problems. Often these don't have a specific street number (at least, not easily findable). Despite the fact that Cadigal Reserve is located at the same address as in the link above, if I enter that as part of the query string and remove the street number, the results become rather useless: link
Typing this directly into maps.google.com easily finds the park itself (and of course, you could then find the latitude/longitude by looking in the URL).
Is there not any way of using the Google Maps API to geocode a park location like this?
It is important to understand that geocoding is not an exact science. The recommended practice if you have addresses that you know should geocode to a specific location is to build a cache and use local (client-side) geocoding.
In version 2 of the api you would build your own client-side cache that contains pre-computed geocoder responses by extending the GeocodeCache. Once a cache is defined, you would call the setCache() method and away you go. This is pretty much explained here:
http://code.google.com/apis/maps/documentation/javascript/v2/services.html#Geocoding_Caching
However, AFAIK GeocodeCache was removed in V3 of the api...
So, I would suggest implementing your own client -side caching-strategy of known addresses and their corresponding coordinates. When your application receives a geocode request for a known address the response would come from your cache (rather than Google's geocoding servers).
Failing all that you can always use a payed geocoding service that, in theory, will have a much more accurate dataset (as well as a higher limit on requests, etc).
Finally, you should also take a look through the Geocoding Strategies document as it gives a good handle on some of the issues here.
Is it possible to do a google map lookup using the google maps API from a UK postcode? I know you can search by UK postcode on their website, but this converts to lat / long. I don't have access to the PAF database to be able to convert to long / lat.
An example:
Users have an item to sell. One of the details of that item is a postcode, where the user / item is located. When the items are displayed on the front end of the website, there needs to be a google map of the items location generated using the postcode.
If this is possible, how do I do it?
What about using:
<img src="http://maps.google.com/maps/api/staticmap?center=POSTCODEHERE&zoom=14&size=200x200&maptype=roadmap&markers=color:ORANGE|label:A|POSTCODEHERE&sensor=false" style="float: right">
Then replace POSTCODEHERE in the two sections above with their postcode.
You can change the size from 200x200 or the marker colour, label etc. too if you wish.
You can do it purely though Google maps.
I did it for a client earlier this year and have just had to do a few modifications. I also did some direction-grabbing. It's all pretty simple but best viewed in context.
Take a look at the source of the page I made.
Google does not provide a geocoding api in the UK because of the licensing model the Royal Mail releases postcode data under.
The are however some tools that people have written that enable geocoding using google, but that would be technically illegal afaik.
One option then is to use one of the several uk geocoding providers. I don't want to sound lazy but they are easily googled. They typically charge a few pence per geocode.
It's (now) very easy to do this using google's LocalSearch API:
function usePointFromPostcode(postcode, callbackFunction) {
localSearch.setSearchCompleteCallback(null, function() {
if (localSearch.results[0]) {
var resultLat = localSearch.results[0].lat;
var resultLng = localSearch.results[0].lng;
var point = new GLatLng(resultLat,resultLng);
callbackFunction(point);
} else {
alert("Postcode not found!");
}
});
localSearch.execute(postcode + ", UK");
}
callbackFunction() will receive a GLatLng object with, in my experience, very accurate coordinates. In fact, it's trivial to then feed that GLatLng to a GClientGeoCoder's getLocations() method and get back full Placemark details, which include details down to the level of address range (e.g. 1-18 Foo Street).
The real question is: how legal is that?
you need the PAF database, each postcode is held as a polygon, so unless you have that initial data you cannot restrict the search to the polygon, or to a radius around the centrepoint.
The postoffice will sell you all the data you require though, prices start from £85pa.
PS. Google does it because they have the PAF database, when you type in the postcode, they lookup the centre and display that on their map.
The folks behind openstreetmap.org have been working on a free equivalent - I don't know how ready for prime time it is, but FWIW:
http://freethepostcode.org/
http://www.websemantics.co.uk/resources/postcode_to_coordinates_conversion_tool/
Site will provide you with a longitude and latitude which you can place right into your google code.
Small UK business or charity can apply for a free licence of use PAF.
https://www.poweredbypaf.com/register-for-free-use-of-paf/
No one seems to have searched very hard... there is a freely available list of UK postcodes and positions out there. More importantly its all redundant because Google maps provides the ability to search by post code to begin with. Even using the API is a redundant extra given that the service is provided over the internet... there is nothing to stop you sending a http request yourself and displaying portions of the returned data, as long as you preserve any necessary copyright messages etc..