latitude-longitude

I have a form on my website where a user enters an address of a place. When they submit the form, I convert this location into latitude/longitude and store this in a MySQL Database. I am using Google's Geocode service for this conversion. The problem is that I can't find either a class or a service to convert that latitude/longitude back to an address and as far as I know, Google's Geocode service is a unidirectional conversion. I realize I could store the physical address in the database, but over time this is wasted space when it could be stored in a simpler format. Does anybody know of

THis is my location class with this i am getting location longitude and latitude, but my problem is if i change my current location the longitude and latitude values are not updating. if i store my home location in my device, then my app is taking every time the same longitude and latitude values it is not taking my current location details. ex: I was in new york today and I launched a app and the location was my home in new jersey. public class GetLocation extends Activity { protected LocationManager locationManager; protected Button retrieveLocationButton; Context mContext; Double Longitude,

In the image below, you can see that there 3 lines drawn from one point (the black circle) to its 3 related points (). IMAGE QUESTION How to calculate latitude and longitude point between points along each line, using a percentage of the distance between the two points? For example, if I wanted to get the position to be able to draw additional circles along each line with a 20% difference? WHAT CODE I HAVE NOW var data = [ { "coords" : [ 53.409045, -2.985406 ]}, { "coords" : [ 53.408747, -2.982862 ]}, { "coords" : [ 53.407630, -2.984136 ]}, { "coords" : [ 53.407142, -2.986931 ]} ]; var pointA

I was having some problem with Google Heatmap. The result that I am getting as such: The following as the code for me to populate the array for heatmap, I declared the heatmapData as global array so that I can be used in some other function: var heatmapData = []; function addForecastMarker(marker){ // code to plot marker here heatmapData.push({location: new google.maps.LatLng(marker['lat'], marker['lng']), weight: marker['total'].toFixed(2)}); } When I tried to print out the above data to ensure I am retriving the correct data, I am getting these which mean my population for heatmapData is no

Possible Duplicate: How to retrieve user's current city name? using the following methods i am getting latitude and longitude of the current position - (void)viewDidLoad { [super viewDidLoad]; locationManager = [[CLLocationManager alloc] init]; locationManager.delegate = self; locationManager.distanceFilter = kCLDistanceFilterNone; // whenever we move locationManager.desiredAccuracy = kCLLocationAccuracyHundredMeters; // 100 m [locationManager startUpdatingLocation]; } - (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *

I want to implement Nearest Place available to User algorithm in Java or MySQL. I have Stations table in MySQL database which has around 100K records of Stations with Latitude and Longitude . If User gives his latitude and longitude as x and y, then I want to return nearest stations available from User's location. So please suggest me any algorithm available in Java or MySQL . I tried with the following query, but it seems slower in performance - SELECT *,3956*2*ASIN(SQRT(POWER(SIN((user_lat-abs(st.station_lat))*pi()/180/2 ), 2) + COS(user_lat*pi()/180)*COS(abs(st.station_lat) *pi()/180)*POWER

I have a list of points P=[p1,...pN] where pi=(latitudeI,longitudeI). Using Python 3, I would like to find a smallest set of clusters (disjoint subsets of P) such that every member of a cluster is within 20km of every other member in the cluster. Distance between two points is computed using the Vincenty method . To make this a little more concrete, suppose I have a set of points such as from numpy import * points = array([[33. , 41. ], [33.9693, 41.3923], [33.6074, 41.277 ], [34.4823, 41.919 ], [34.3702, 41.1424], [34.3931, 41.078 ], [34.2377, 41.0576], [34.2395, 41.0211], [34.4443, 41.3499],

This question already has an answer here: Moving a CLLocation by x meters 10 answers My app needs to be able to get the user starting location and then calculate lat/long coords specific distances away from that spot (in all directions). Does anyone know how I might accomplish this? Morgan Chen The set of points a fixed distance from a central point has infinite members, so it's not possible to list out every one. However, given a single point you could check if it is within the set by using the distanceFromLocation: method. Mathematically, given a radius coordinate (long, lat) and assuming