latitude rugged

Android development: LocationManager's process of obtaining longitude and latitude and positioning (with demo)Location functions are often used in Android development, especially those that depend on the location function. Many people prefer Baidu map and AMAP sdks and open APIs, however, if you only need information such as longitude and latitude, city, street address, and other information, you do not nee

1.PHP realization of distance by latitude calculationUnits of kmfunction Getdistance ($lng 1, $lat 1, $lng 2, $lat 2)//distance based on latitude and longitude{Turn angle into Fox degree$radLat 1=deg2rad ($lat 1);$radLat 2=deg2rad ($lat 2);$radLng 1=deg2rad ($lng 1);$radLng 2=deg2rad ($lng 2);$a = $radLat 1-$radLat 2;//Two latitude difference,

-The first KindSELECTent_id, Ent_name, longitude, latitude,ROUND( 6378.138 * 2 * ASIN( SQRT(POW (SIN( ( 40.042307 * PI()/ the -Latitude* PI()/ the ) / 2 ), 2 ) + COS(40.042307 * PI()/ the)* COS(Latitude

MySQL Performance tuning – use faster algorithms for distanceRecently encountered a problem, through a constant attempt to finally put a sentence originally occupied nearly 1 seconds of the query optimized to 0.01 seconds, efficiency increased 100 times times.The problem is that there is a MySQL data table that holds the latitude and longitude information for the user's place of residence, and the table structure can be simplified to: id (int), longit

public class GetLocation {public static void main (string[] args) {//lat 39.97646//log 116.3039 String add = Getadd (" 116.3039 "," 39.97646 "); Jsonobject Jsonobject = Jsonobject.fromobject (add); Jsonarray Jsonarray = Jsonarray.fromobject (jsonobject.getstring ("addrlist")); Jsonobject j_2 = jsonobject.fromobject (jsonarray.get (0)); String Alladd = j_2.getstring ("Admname"); String arr[] = Alladd.split (","); System.out.println ("Province:" +arr[0]+ "\ n City:" +arr[1]+ "\ n area:" +arr[2]);}

. Net calculates the distance between 2 points, or calculates the distance between 2 coordinates and 2 latitude and longitude.The code is as follows:1 /// 2 ///calculates the distance between the Geographics locations3 /// 4 Public Static classgeodistance5 {6 Public Static DoubleBetween (DoubleLatitude1,DoubleLongitude1,DoubleLatitude2,DoubleLongitude2,7Distanceunits units =distanceunits.kilometers)8 {9 Do

SQL SERVER calculates the distance according to the latitude and longitude of the map.Copy codeThe Code is as follows:Go-- Create a latitude and longitude distance calculation functionCREATEFUNCTION [dbo]. [fnGetDistance]-- LatBegin start longitude-- LngBegin start dimension(@ LatBegin REAL, @ LngBegin REAL, @ LatEnd REAL, @ LngEnd REAL)RETURNSFLOATASBEGIN-- Distance (km)DECLARE @ Distance REALDECLARE @ EAR

This article describes how to use the Baidu map api to query the longitude and latitude Based on the address, attach an instance, and recommend it to friends who need it. The Code is as follows: Query longitude and latitude by address

　　[Self.locationmanager stopupdatinglocation];}@end#pragmaThe mark-delegate method is used to implement the update of the location-(void) Locationmanager: (Cllocationmanager *) Manager didupdatelocations: (Nsarray *) locations{//the current location of the deviceCllocation *currlocation =[Locations Lastobject]; NSString*latitude = [NSString stringWithFormat:@"Latitude:%3.5f", CurrLocation.coordinate.latitud

Mobile is the biggest feature of mobile phones and handheld devices. You can use the ddms view of eclipse to simulate device location changes, change the longitude and latitude, click send, and run the program. In the application, dynamically obtain the device location and display the current location information. There are three steps to obtain location information:1. Add system permissions to support access to LBs hardware 2. Obtain the locationman

// Calculate AreaPublic static double calcarea (arraylist pointx, arraylist pointy, string mapunits){ Int COUNT = pointx. count;If (count> 2){Double mtotalarea = 0; If (mapunits = "Degrees") // spherical polygon under the coordinate of latitude and longitude{Double lowx = 0.0;Double Lowy = 0.0;Double middlex = 0.0;Double middley = 0.0;Double highx = 0.0;Double highy = 0.0; Double AM = 0.0;Double Bm = 0.0;Double CM = 0.0; Double Al = 0.0;Double BL = 0.

=-D11 * a * (1-E * E)/6;Fe = E11 * a * (1-E * E)/8;Fg =-F11 * a * (1-E * E)/10; C [0] = fa;C [1] =-(FB * 2 + FC * 4 + FD * 6 );C [2] = (FC * 8 + FD * 32 );C [3] =-FD * 32;/*************************************** *******54 coordinate system computation result have difference fromThe known value; but I don't find fault.Known: CO 6367558.49686C1 1, 32005.79642C2. 133.86115C3 1, 0.7031Compute:Co 1, 6367558.4968746C1 1, 32005.780305529C2. 133.9203503C3 1, 0.7041**************************************

successful");} else {system. out. println ("search failed");} public class mysearchlistener implements mksearchlistener {public void ongeta Ddrresult (mkaddrinfo arg0, int arg1) {/** returns the address information search result. Parameter: arg0-arg1-error no. In the search result, 0 indicates that the result is correct, and result indicates that the result is correct. 100 indicates that the result is correct and no relevant address information */string location = NULL; if (arg0 = NULL) {locati

Baidu Map location Search and mouse click Place to get latitude and longitude, these are the map comparison of basic: as followsCode section:Baidu Map location Search and mouse click Place to get latitude and longitude

PHP address lookup returns latitude and longitude Baidu API /** * Baidu Maps query the longitude and latitude based on the address */ Public function search_xy (){ $ Address = str_replace ('','', $ address ); $ Rows = file_get_contents ("http://api.map.baidu.com/geocoder/v2? Ak = xxxxxxxxxxxxxx callback = renderOption output = json address = capital Library city = Chaoyang district, Beijing ); $

How to store Google Maps longitude latitude is better Title ------Solution-------------------- Two fields ------Solution-------------------- I used to use two characters Gencun, one longitude, one latitude. ------Solution-------------------- You can try the JSON PHP Code $coord = Array ( 0=>array ( "x" = "102.00001", "y" = "20.12321" ), 1=>array ( "x" = "300.22",

After Google maps are released, people can share their geographic locations in a completely new way. Previously, this feature was only available through mobile phones or iGoogle gadgets, now, Google's social network orkut has launched Google's utility Google Latitude application, which can be installed on orkut. With this utility, we can see the geographical location of our friends on orkut and know if your friends are already home. It's easy to trac

You can use some online services in the network to calculate the time of the longitude and latitude. The api address and format are as follows: Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->Http://www.earthtools.org/timezone/40.71417/-74.00639 Return Value: Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> Bugs: Sometimes the time returned by the pr

The formula should be: longitude and latitude in any decimal number. The integer is the degree, and the fractional part is the score in the integer part of the number obtained by multiplying the decimal part by 60, multiply the decimal part of the number by 60The number is the number of seconds. For example, the number of degrees converted from 36.12432314 to second is: the number of degrees is "36", and the score is an integer of "0.12432314 × 60 = 7