latitude-longitude

What I am trying to do is I have entries in the database which have a lat/long stored with them. I want to calculate the distance between users lat/long and entries lat/long (in DB). After that, I want to echo the ones with distance less than 500 meters. So far I am able to do this using foreach . <?php mysql_connect("localhost", "beepbee_kunwarh", "kunwar") or die('MySQL Error.'); mysql_select_db("beepbee_demotest") or die('MySQL Error.'); $Lat = $_REQUEST['Lat']; $long = $_REQUEST['long']; $query = mysql_query("SELECT a.*, 3956 * 2 * ASIN(SQRT( POWER(SIN(($Lat - Lat) * pi()/180 / 2), 2) +

I know that is not a technical question, but I don't know where else to ask. Is there a way to get the marked speed limit of a road from google or bing maps? or any other web service? You cannot obtain this information from Bing Maps or Google Maps. Nor am I aware of any other webservices that provide this information (certainly not any free ones). Open Street Map ( http://osm.org ) has the ability for ways to be recorded with the maxspeed tag. You could download the OSM planet dataset and host it in a spatial database such as SQL Server 2012, then create your own web service to query the

Is there a way in C# to calculate given a latitude and longitude when the sun will set and rise for a given day? Javascript calculations here . Now you just need to port. Edit: the calculations are in the source code of this page now. Edit: here is a direct link to the source code. No need to go hunting through the html. 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));

i searched a while but found nothing, thats simular to my problem. i'm trying to use the YAHOO Weather API, for example: http://weather.yahooapis.com/forecastrss?w=4097 i don't know the WOEID in my case, but i got latitude and longitude points. so my question is: is there a way to get the WOEID of a place by using lat and long points? This is now available through the recently released PlaceFinder API . Kudos to Yahoo! for providing yet another important piece of the Geo puzzle. Yahoo! PlaceFinder API allows you to find a corresponding WOEID for a latitude/longitude pair. Consider this example

How can I find out which NSTimeZone a given longitude and latitude fall in? Roohul I have tried APTimeZones library. In my case I needed Timezone as well as country name from the lat long of a particular city. I went through the library to know how it works. It actually has a file in JSON format which has all the timezones along with their corresponding lat longs. it takes the lat long as input and loops through this JSON file comparing the distances of all the timezone's lat long from the input lat long. It returns the time zone which has shortest distance from the input lat long. But the

Sometimes when trying to get the Latitude span or Longitude span of a mapview with getLatitudeSpan() and getLongitudeSpan() I get 0 and 360*1E6 respectively. This doesn't happen always but it is a problem, has anybody got this problem? Any workarounds? I tried using getProjection() too but I get the same problem. Here is the piece of code: MapView mapView = (MapView) findViewById(R.id.mapview); int lat = mapView.getLatitudeSpan(); // sometimes returns 0 int long = mapView.getLongitudeSpan(); // sometimes returns 360*1E6 I would detect the condition and schedule your work to try again after a