geolocation

Is there a way to do that using open source map / API (Google Map API, Microsoft Live Map API)? Or is there a way to traverse roads and junction from map files? (if I purchase commericial map data) Thanks. Edit: Either open source or API A possible solution based on openstreetmap depending on the quality of OSM data in the US. As described here "Exit ramps/slip roads should be tagged as highway=motorway_link or highway=primary_link" if you import the map data for the US (using osm2pgsql ) you can then select all motorway links. E.g. (selects based on my own data, i.e. very much outside US)

I am looking for a list of countries/states/cities that can be used with Facebook Graph API when publishing targeted posts. I found one JSON file available on this page but the file doesn't parse correctly and I also doubt whether it can be used for post targeting since the file is for advertisements. Also, I am not sure whether the third party data like the one provided by MaxMind can be used directly with Facebook API. Does anyone have such a list or can atleast point me to a right direction? The answer is here: https://developers.facebook.com/docs/reference/ads-api/get-autocomplete-data/

How can I catch the geolocation specific error to notify the user that they must have geolocation turned on? The catch logs an error called PositionError as referenced here in the Mozilla docs " https://developer.mozilla.org/en-US/docs/Web/API/PositionError ". *Note: my code does not catch the error, it simply displays: Uncaught (in promise) ReferenceError: PositionError is not defined Code getCurrentLocation() { return new Promise((resolve, reject) => { navigator.geolocation.getCurrentPosition(resolve, reject, { enableHighAccuracy: true, timeout: 5000, maximumAge: 0 }); }); }, async inout() {

In the Displaying Overlays on a Map section of the iOS Developer Library Location Awareness Programming Guide, there is an example that "shows a filled and stroked overlay covering the state of Colorado." // Define an overlay that covers Colorado. CLLocationCoordinate2D points[4]; points[0] = CLLocationCoordinate2DMake(41.000512, -109.050116); points[1] = CLLocationCoordinate2DMake(41.002371, -102.052066); points[2] = CLLocationCoordinate2DMake(36.993076, -102.041981); points[3] = CLLocationCoordinate2DMake(36.99892, -109.045267); MKPolygon* poly = [MKPolygon polygonWithCoordinates:points

I am trying to scrape latitude and longitude of user from Twitter with respect to user names. The user name list is a csv file with more than 50 names in one input file. The below are two trials that I have made by far. Neither of them seems to be working. Corrections in any one of the program or an entirely new approach is welcome. I have list of User_names and I am trying to lookup user profile and pull the geolocation from the profile or timeline. I could not find much of samples anywhere over Internet. I am looking for a better approach to get geolocations of users from Twitter. I could