latitude e6420

How do I get the latitude and longitude of my current position? Once you know the latitude and longitude of two locations, how do you calculate the distance between the two locations? Recently doing a public number, need to get the latitude and longitude of the user, and then calculate the user's latitude and longitude

Mysql functions-distance calculation based on latitude and longitude coordinates in actual Web development, more and more professional algorithms are coming into use in some specific fields. For example, the distance calculation method based on two points of latitude and longitude is mentioned in this article. Two common computations: 1. The distance to be calculated is the distance of the elliptical sphere

Ec (2); based on some online materials, I have rewritten a Geo class that is convenient for obtaining Latitude and longitude information. Latitude and Longtitude are Latitude and longitude respectively. The most important constructor is to pass in the place name and obtain the latitude and longitude values from GoogleM

: = Z * cos (T) + 0.0065;EXCEPTIONWhen OTHERS ThenNULL;END;Test code:DeclareVal varchar2 (1024);Lat number;LNG number;BeginLat: = 25.123456;LNG: = 120.987654;Google2baidu (LAT,LNG);Val: = To_char (lat) | | ', ' | | To_char (LNG);Dbms_output.put_line (Val);Baidu2google (LAT,LNG);Val: = To_char (lat) | | ', ' | | To_char (LNG);Dbms_output.put_line (Val);EndOutput Result:25.12950357111129114394070387150607218949, 120.9941596847708026959269928710265389825.12345611379500842252418931941721965068, 120.

= 3.1415926;x = x/1000000.0;y = y-500000.0;BF = 9.04353692458*x-0.00001007623*pow (x,2.0) -0.00074438304*pow (x,3.0) -0.00000463064*pow (x,4.0) +0.00000505846* Pow (x,5.0) -0.00000016754*pow (x,6.0);HBF = BF * pi/180.0;SA = 6378245.0;SB = 6356863.019;SE2 = 0.006693421623;SEP2 = 0.006738525415;W1 = sin (HBF);W2 = 1.0-se2 * POW (W1, (double) 2);W = sqrt (w2);MF = sa* (1.0-SE2)/pow (W, (double) 3);W3 = cos (HBF);W4 = POW (SA, (double) 2) *pow (W3, (double) 2) + POW (SB, (double) 2) *pow (W1, (doub

Package com.maputil; Import Java.io.BufferedReader; Import java.io.IOException; Import Java.io.InputStream; Import Java.io.InputStreamReader; Import java.io.UnsupportedEncodingException; Import java.net.HttpURLConnection; Import Java.net.URL; Import java.net.URLConnection; Import java.util.ArrayList; Import Java.util.HashMap; Import java.util.List; Import Java.util.Map; Import Java.util.Map.Entry; public class Addresslatlngutil {private static final String Request_encode = "UTF-8"; private st

Recently used in accordance with the latitude and longitude calculation of the Earth's surface two distance between the formula, and then use JS to achieve a bit. There are probably two ways to calculate the distance between two points on the Earth's surface. The first is the default Earth is a smooth spherical surface, and then calculate the distance between any two points, this distance is called the Great Circle distance (the great Circle Distance)

Java known two locations latitude and longitude distance (very accurate) Package com.lbnet.lzx.util; public class GoogleMap {Private static final Double Earth_radius = 6378.137;private static Double rad (double D){return d * math.pi/180.0;}/*** ????}????????????? /γ???* @param LAT1* @param lng1* @param lat2* @param lng2* @return*/public static double Getdistance (double lat1, double lng1, double lat2, double lng2){Double RADLAT1 = rad (LAT1);Double

ctrl_ove = new Bmap.overviewmapcontrol ({anchor:bmap_anchor_bottom_right,isopen:1}); Map.addcontrol (ctrl_ove); Add a scale control to the map var Ctrl_sca = new Bmap.scalecontrol ({anchor:bmap_anchor_bottom_left}); Map.addcontrol (CTRL_SCA); } Second, click the location and then convert to address by latitude Listens for click event map.addeventlistener ("click", Function (e) { map.clearoverlays (); Alert (

Baidu Map, to achieve vehicle trajectory mapping Implementation ideas: 1. Vehicle trajectory mapping according to latitude and longitude 2. Using the Baidu Map API two overlay implementation, Polyline (polyline) Draw track, Marker (icon) to draw the car icon 3. Connect each of the two coordinates to form a coherent trajectory line 4. After the next icon is generated, delete the last drawn icon to create a car moving animation sense 5. This example use