geolocation

问题 Is there are way to fetch location/coordinate specific public posts using the facebook search api ( https://graph.facebook.com/search/?q=KEYWORD&type=post ... )? I want this to be a general search query, without any user authorization. I tried using https://graph.facebook.com/search?type=location&center=37.76,-122.427&distance=1000&access_token=... , but this requires access_token and returns objects(not posts) posted only by friends of the user whose access token is used for querying. I also

问题 I am trying to use the geolocations API with the Directions service but I get: var UserLoc; if (navigator.geolocation) { navigator.geolocation.getCurrentPosition(function(position) { var lat=position.coords.latitude; var lng=position.coords.longitude; console.log(lat); console.log(lng); UserLoc = new google.maps.LatLng(lat,lng); var NewMarker = new google.maps.Marker({ position: UserLoc, draggable: false, animation: google.maps.Animation.DROP, map: SEVTmap }); } ); } else { alert ( "Възникна

问题 I am creating an Android app which requires finding a coordinate on the same route after X kilometers. I have two coordinates x1,y1 & x2,y2 on a road. Now, my requirement is to find coordinate x3,y3 after some 3 kilometers (i.e., coordinate after x2,y2 not between x1,y1 & x2,y2 ) on the same road. How can this be achieved ? 回答1: If you know the bearing, you can calculate the destination coordinate. Sample Code: private LatLng getDestinationPoint(LatLng source, double brng, double dist) { dist

问题 My twitter4j streaming works when I am using track and user queries but when I use location queries, It returns a 404, i.e. $ java -cp .:twitter4j-core-4.0.4.jar:twitter4j-media-support-4.0.4.jar:twitter4j-async-4.0.4.jar:twitter4j-examples-4.0.4.jar:twitter4j-stream-4.0.4.jar PrintFilterLocationStream "{1,2}" [Wed Jul 06 00:05:41 SGT 2016]serialVersionUID: 6175546394599249696 [Wed Jul 06 00:05:41 SGT 2016]debug: true [Wed Jul 06 00:05:41 SGT 2016]user: null [Wed Jul 06 00:05:41 SGT 2016

问题 My_Json_File { "addressInfo": { "city": "Wimsheim", "postcode": "71299", "geopoint": { "lon": 48.845877, "lat": 8.821861, "alt": 0.0 } }, "_id": "ac169008-aa5b-4b09-aa9e-3bf3018f316d" } Pls give suggestion on how encounter this "alt" field in geopoint and "_id" field and also write a suitable mappings for above JSON file. Update 1 My_Json_File { "_id": "ac169008-aa5b-4b09-aa9e-3bf3018f316d" "addressInfo": { "city": "Wimsheim", "postcode": "71299", "geopoint": { "lon": 48.845877, "lat": 8

问题 Although the youtube-api, v3, allows you to make a request for videos that come from a particular area (for example, by specifying the location and the radius), it appears that the resulting information about the videos does not contain location information. That is, you can't get the reported lat/long of the video itself. A query for a specific location would look like this: https://www.googleapis.com/youtube/v3/search?part=snippet&type=video&key=[key]&location=37,5%2C-120.5&locationRadius

问题 Although the youtube-api, v3, allows you to make a request for videos that come from a particular area (for example, by specifying the location and the radius), it appears that the resulting information about the videos does not contain location information. That is, you can't get the reported lat/long of the video itself. A query for a specific location would look like this: https://www.googleapis.com/youtube/v3/search?part=snippet&type=video&key=[key]&location=37,5%2C-120.5&locationRadius

问题 I'm writing code in a desktop application that will be used in police cars to use the new Windows Geolocation API. I've written an event listener for the Geolocator.PositionChanged event, but it's not getting called. In my reading of the documentation, it seems that the Gelocator only raises this event when the position changes. I figure the first thing my program should do after it finished setting up the event listener is to call the Geolocator.GetPositionAsync method to get the current

问题 I'm using the Google API to get a user's location on this site. How would I go about getting the weather for that user from Yahoo or somewhere? UPDATE : Ok so I'm going with Yahoo, but I've never done an HTTP GET request before. Im using jQuery and the following code: function getWeather () { $.get("http://weather.yahooapis.com/forecastrss?w=2502265", function(data){ alert("Data Loaded: " + data); }); } However, the alert is only returning "Data loaded", and the rest is blank, so I'm doing

问题 I am working with the New York City taxi data set. The data set has columns including datetime, pickup lat/lon, dropoff lat/lon etc. Now I want to reverse geocode the lat/lon to find the borough/neighborhood. I have two data frames. 1) The first data frame contains all the points I want to classify with the name of the nearest newyork neighborhood. 2) The second data frame contains neighborhood names and their centroids. I show you a small example. df_points_to_classify: Click here to