I have a google maps place defined by their place_id s.
The place can refer to:
an address, eg 221B Baker St, Marylebone, London NW1 6XE, UK : ChIJFbp6NM8adkgRdOYUaV-EQlw
Or a general area eg London NW1, UK: ChIJoZM_S7EadkgR_T2MfOBVirE
I would like to know, using google maps API, whether a given address is inside the previous area or near the previously defined address (distance can be defined as a birth flight distance from the previous place).
You can use place IDs as origins and destinations in the Google Distance Matrix API. So, you can use your place ID as an origin and the address you want to test as the destination. Call the API to determine the distance. I think this was an update in 2017 maybe, see: https://developers.google.com/maps/documentation/distance-matrix/intro#RequestParameters
Related
I would like to calculate the number of unique kilometers of roadways in my city. More generally, I wish to sum the distance of every road within a bound, for simplicity a rectangle will do.
Is this possible using the Google Maps suite of APIs? If so, how would you go about doing it? If anyone has any resources related to this type of problem, I would be interested in reading them regardless of language (or even solutions with other mapping tools).
Bonus points: A general solution to this problem that can be applied to the pre set "cities" (example) that appear in Google Maps with well defined city limits.
You can use OpenStreetMap to calculate the total road length of a specific country or geographic area. There are multiple solutions available, based on multiple similar questions already asked.
Approach 1 from Total road length in Kilometers for a country at help.openstreetmap.org:
Use the Perl script osm-length-2.pl. There is an example at a mailing list post.
Approach 2 from Actual road length of exported map at help.openstreetmap.org:
Import your data (the planet or an country or area extract) into a PostGIS database, then use the following queries proposed by Frederik Ramm:
SELECT way AS clip
INTO clipping_polygon
FROM planet_osm_polygon
WHERE boundary='administrative' AND admin_level='8' and name='My City';
SELECT name, highway, ST_INTERSECTION(way, clip)
INTO clipped_roads
FROM planet_osm_line, clipping_polygon
WHERE ST_INTERSECTS(way, clip) AND highway IS NOT NULL;
SELECT highway, SUM(ST_LENGTH(way::geography))
FROM clipped_roads
GROUP BY highway;
Below two placeID's gives the same address.
1. EicyMDEgU291dGggTG93cnkgU3RyZWV0LCBTbXlybmEsIFROLCBVU0EiMRIvChQKEgm7_A4lPAxkiBEptR2cpqTb1xDJASoUChIJT4MxvQIMZIgRENDVZ6XiGTc
2. ChIJBbYyJDwMZIgR1TtBueaig5w
PlaceID1 was returned when the address searched using the autocomplete was " 201 South Lowry Street" and PlaceID2 was returned when the address searched using the autocomplete was " Goodwill Industries of Middle Tennessee 201 South Lowry Street".
Even though the above addresses are different, the place details API gives the same address information.
https://maps.googleapis.com/maps/api/place/details/json?place_id=EicyMDEgU291dGggTG93cnkgU3RyZWV0LCBTbXlybmEsIFROLCBVU0EiMRIvChQKEgm7_A4lPAxkiBEptR2cpqTb1xDJASoUChIJT4MxvQIMZIgRENDVZ6XiGTc&key=API_KEY
https://maps.googleapis.com/maps/api/place/details/json?place_id=ChIJBbYyJDwMZIgR1TtBueaig5w&key=API_KEY
Question :
1. Why is the same address which is of the street returned for two different placeID's?
2. The location returned by places Details API is correct but the address is of the street.
Below are few more examples where I observed same scenarios. Could you please brief on the below mentioned examples also?
PlaceID : ChIJZ2fZgcNVZIgRRY-uzGW9IBc and ChIJi15Hp8RVZIgRojWuKm_aG3M returned the same address as "2008 Memorial Boulevard Springfield Tennessee United States 37172", but the straight line distance between the two places is approximately 154 meters.
PlaceID : EiBBbm5leCBBdmVudWUsIE5hc2h2aWxsZSwgVE4sIFVTQSIuKiwKFAoSCd8ldk-TYWSIEZbufa-nQvmSEhQKEgk9kOsTMuxkiBGg2umh0Lk_fQ and ChIJ9ynrOIthZIgR-_7_cmwzeXo returned the same address as "3736, Annex Avenue Nashville Tennessee 37209" , but the straight line distance between the two places is approximately 6.92 meters.
PlaceID : ChIJTZvXpuJ7ZIgR8GqA7eDu5oY and ChIJ3ZUKweJ7ZIgRBjj8OqdMm5E returned the same address as "1777, Galleria Boulevard Franklin Tennessee 37067 " , but the straight line distance between the two places is approximately 12.24 meters.
PlaceID : EicyMDEgU291dGggTG93cnkgU3RyZWV0LCBTbXlybmEsIFROLCBVU0EiMRIvChQKEgm7_A4lPAxkiBEptR2cpqTb1xDJASoUChIJT4MxvQIMZIgRENDVZ6XiGTc and ChIJBbYyJDwMZIgR1TtBueaig5w returned the same address as "201 S Lowry St, Smyrna, TN 37167, United States " , but the straight line distance between the two places is approximately 97 meters.
Please note that it's possible for each place or feature to have similar addresses. This is why the Places API used Place IDs instead to uniquely identify the place/feature. As per this doc:
Place IDs uniquely identify a place in the Google Places database and
on Google Maps.
Below is my investigation on the addresses you have mentioned:
The place ID, ChIJZ2fZgcNVZIgRRY-uzGW9IBc, is of type, premise. As per the Address Types doc here:
Premise indicates a named location, usually a building or collection
of buildings with a common name.
If you think that a collection of building should not have the same address as the Place ID, ChIJi15Hp8RVZIgRojWuKm_aG3M, then I suggest that you report this Maps Data issue. (I'll put some more details on how to report Maps Data issues below)
The address returned for EiBBbm5leCBBdmV...iBGg2umh0Lk_fQ is an address of a route (Annex Ave, Nashville, TN 37209, USA), which is not the same as the the second Place ID's (ChIJ9ynrOIthZIgR-_7_cmwzeXo) address (3734 Annex Ave, Nashville, TN 37209, USA).
For the Item #3, what I can see is that the place ChIJTZvXpuJ7ZIgR8GqA7eDu5oY is a street_address while the other feature (ChIJ3ZUKweJ7ZIgRBjj8OqdMm5E) is a point_of_interest. These two features does not seem to be related so I believe that this is another Maps Data issue which can also be reported.
The feature, EicyMDEgU29...ENDVZ6XiGTc, on the other hand appears to be an inferred street address from a range of addresses. While the place, ChIJBbYyJDwMZIgR1TtBueaig5w, is the actual point_of_interest that's on that same street address. Note that the point of interest may close or move to a new location, but, the street address most likely won't change.
For Maps Data issues, this can be reported using the "Report a
Problem" or "Send feedback" link on the bottom right corner on
maps.google.com or in the Google Maps for Mobile Application. To learn
more, please see this guide. But for Maps Data that are added
using Google My Business, this can be modified directly by the
business owners themselves on their Google My Business account.
I hope this helps!
In my google maps autocomplete server side query, i'm trying to return results around or near a latitude and longitude, I've tried this so far
https://maps.googleapis.com/maps/api/place/autocomplete/json?key=<<KEY>>&types=geocode&sensor=true&language=en&location=40.64131109999999%2C-73.77813909999998&strictBounds=true&radius=10&input=london
WHERE 40.64131109999999%2C-73.77813909999998 is the latitude and longitude of JFK - John F. Kennedy International Airport.
But when the search string is london, results still show. Any idea how to limit results within a certain radius / boundary or country? Thanks
Here are my findings on your URL request:
You have included strictBounds=true which is incorrect since parameters are case sensitive hence it will be omitted in the request. It should be strictbounds instead.
You also do not need the =true because adding the parameter strictbounds is enough to restrict the places returned within the defined location and radius.
The value of radius that you have included is too small (10) which may lead to ZERO_RESULTS
You may try this request instead:
https://maps.googleapis.com/maps/api/place/autocomplete/json?input=london&location=40.64131109999999,-73.77813909999998&radius=10000&components=country:US&strictbounds&key=YOUR_API_KEY
I have a list of latitude/longitude which point to some cities in England.
For each of these coordinates I want to get the region they belong to.
By region, I mean one of these: https://en.wikipedia.org/wiki/Regions_of_England
For instance: For coordinates (53.38112, -1.47008), ie. Sheffield, I need to find Yorkshire and the Humber.
To achieve this, I tried to use Google Reverse Geocoding API:
https://maps.googleapis.com/maps/api/geocode/json?latlng=53.38112,-1.47008&key=
Google then tells me that:
country is United Kingdom
administrative_area_level_1 is England, which is a State (or kind of)
administrative_area_level_2 is South Yorkshire, which is a County
administrative_area_level_3 is Sheffield District, which is a District
So Google returns me the correct State, County and District. However, Region is missing.
Is there any way to obtain it?
Looking at the documentation I don't think the Google API returns such information.
An alternative way to get round this would be to build a list of which counties belong in which of the 9 regions and then look up the region based on the county name. Obviously, this would be a bit of work on your part putting all the county names into a list.
While this doesn't directly answer your query, you could use a set of polygons which trace the regions and a point in polygon algorithm (this example is in PHP but the algorithm exists in many languages) which would allow you to check which of the regions any latitude and longitude is in
Our website lets people create listings and these include a location field, which is populate by Google's API, just like on Airbnb, for example. You start typing any part of your address and then you select from the Google's suggestions of matching places.
People can search the listings by location (same Google API populated location field, and you can choose what distance from that location), and this seems to work fine in principle.
The issue is that the search doesn't seem to work for areas, e.g. counties. It seems to take a point within the region and measures from that. So, if I search for listings in "United Kingdom" I get hardly any results 'Within 10 miles' but I get a lot 'Within 250 miles'.
Instead, I want to get all results within the UK if I search for United Kingdom (or a UK county, or within a large city like London).
Why doesn't it work right now, and how can this be done?
To restrict the Autocomplete Box (I guess this is the component you're using) to a country, you can use componentRestrictions as described here (scroll to Restrict the search to a specific country )
If you need to restrict your search in a specific area, such as "10 miles around a defined point", it's a little more complicated. According to the doc, you'll have to
Set the bounds on creation of the Autocomplete object.
Change the bounds on an existing Autocomplete.
Set the bounds to the map's viewport.
Restrict the search to a specific country.
You can find an exemple here on paragraph Set the bounds on creation of the Autocomplete object