You could try the NuGet package GoogleMaps.LocationServices, or just spin of its source code. It uses Google’s REST API to get lat/long for a given address and vice versa, without the need for an API key. You use it like this: public static void Main() { var address = “Stavanger, Norway”; var locationService = new … Read more
If you have the latest version of geopandas (0.3.0 as of writing), and the if df is a GeoDataFrame, you can use the x and y attributes on the geometry column: df[‘lon’] = df.point_object.x df[‘lat’] = df.point_object.y In general, if you have a column of shapely objects, you can also use apply to do what … Read more
A conversion to Swift, taken from this answer: func locationWithBearing(bearingRadians:Double, distanceMeters:Double, origin:CLLocationCoordinate2D) -> CLLocationCoordinate2D { let distRadians = distanceMeters / (6372797.6) // earth radius in meters let lat1 = origin.latitude * M_PI / 180 let lon1 = origin.longitude * M_PI / 180 let lat2 = asin(sin(lat1) * cos(distRadians) + cos(lat1) * sin(distRadians) * cos(bearingRadians)) let … Read more
Here’s what worked for me, without so much bs. int x = (int) ((MAP_WIDTH/360.0) * (180 + lon)); int y = (int) ((MAP_HEIGHT/180.0) * (90 – lat)); The lat,lon coordinates were given to me by Android devices. So they should be in the same standard used by all Google Earth/Map products.
MaxMind Geolite city is free. If it is not good enough, you can apparently upgrade to a more accurate paid-version. I can’t speak for the quality of the paid version, as I have never used it. If you like your SQL, download the CSV version. Load it into your database of choice, and query away. … Read more
Haversine and Vincenty are two algorithms for solving different problems. Haversine computes the great circle distance on a sphere while Vincenty computes the shortest (geodesic) distance on the surface of an ellipsoid of revolution. So the answer to your question can be broken into 2 parts: Do you want to compute the distance on a … Read more
I know this post is old, but in case anyone is still looking… CoordinateSharp is available as a Nuget package. It’s a standalone packge that can handle sun as well as moon times. Celestial cel = Celestial.CalculateCelestialTimes(85.57682, -70.75678, new DateTime(2017,8,21)); Console.WriteLine(cel.SunRise.Value.ToString()); Note: It assumes DateTimes are always in UTC. Lastly, you may need to reference … Read more
Sometimes lat/long are expressed in degrees/minutes/seconds, and require a N, S, E, or W direction to make sense. Decimal latitude and longitude is expressed as either a positive or negative number and doesn’t require a cardinal direction. So if you’re using decimal values for these, they aren’t described as “latitude north” or anything like that. … Read more
With tzwhere and pytz: import datetime import pytz from tzwhere import tzwhere tzwhere = tzwhere.tzwhere() timezone_str = tzwhere.tzNameAt(37.3880961, -5.9823299) # Seville coordinates timezone_str #> Europe/Madrid timezone = pytz.timezone(timezone_str) dt = datetime.datetime.now() timezone.utcoffset(dt) #> datetime.timedelta(0, 7200)