calculate distance between two coordinates latitude longitude

Label:The formula is as follows, Unit meter: 1th Latitude: lng1 lat1 2nd latitude and Longitude: lng2 lat2 round (6378.138*2*asin (POW (sqrt (LAT1*PI ()/180-lat2*pi ()/180)/2), 2) + Cos (LAT1*PI ()/180) *cos (LAT2*PI ()/180) *Pow (Sin ((Lng1*pi ()/180-lng2*pi ()/180)/2), 2)) *1000)For example: SELECT Store_id,lng,lat, ROUND (6378.138*2*asin (SQRT (POW (22.299439*

Calculate the Distance between the Points in PHPThere is a lot of applications where it's useful to know the distance between the coordinates. Here, you'll find a PHP function that takes the latitude and longitude of the points an

value of the Distancefilter property, the greater the application power consumption. 3, calculate the distance between two coordinates through the Distanceto method of the Cclocation object, we can get the distance between two coordinates, the unit is meters.var currentloca

@Transientpublic static listSYSTEM.OUT.PRINTLN ("------Query-----");String hql= "from article Art where art.author.id=" +UID;Double r = 6371;//Earth radius kmDouble dis = 0.5;//0.5 km distanceDouble dlng = 2*math.asin (Math.sin (dis/(2*r))/math.cos (pinfo.latitude*math.pi/180));DLNG = dlng*180/math.pi;//Angle converted to radiansDouble Dlat = dis/r;Dlat = Dlat*180/math.pi;Double Minlat = Pinfo.latitude-dlat;Double Maxlat = Pinfo.latitude+dlat;Double minlng = pinfo.longitude-dlng;Double maxlng =

Under projection transformation, click "Input Single Point Projection conversion" under the "projection conversion" menu ".Set "original projection parameters" and "result Projection Parameters", input known points to the "projection point", the image conversion module, and input the Single Point Projection conversion function under the projection conversion menu. Set current projection: geographic coordinate system, in the format of degree, minute, second, or ddmmss. Depends on the data. If th

The earth is a nearly standard ellipsoid with an equatorial radius of 6378.140 km, a polar radius of 6356.755 km and an average radius of 6371.004 km. If we assume that the earth is a perfect sphere, then its radius is the average radius of the Earth, recorded as R. If the 0-degree meridian is used as a benchmark, the surface distance between the two points can be calculated based on the latitude and

Label:Before very silly very naïve thought is nothing more than a distance, and then compare out on the line, and then when the access to a lot of users, and the database in the latitude information a lot of time, the rapid increase in computational capacity, can make the server completely stupid, or old-timer experience than we rich, gave me a great revelation.MySQL Performance tuning –

** @ Paramdouble $ x longitude @ paramdouble $ y latitude @ paramdouble $ d distance from the unit of meters @ returnarray * functiongetrange ($ x, $ y, $ d, $ x indicates the longitude of a vertex $ y indicates the latitude of a vertex $ d returns the

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

PublicClassDistance{PrivateStaticFinalDoubleEarth_radius = 6378137;PrivateStaticDoubleradDoubleD{ReturnD * math.pi/180.0;} /*** According to latitude and longitude coordinates between two points (Double value) to calculate the distance between two points in meters*@paramLng1

(location); Locationlistener Gps_listener = new Locationlistener () {Monitor position change and get location information in real time@Overridepublic void onstatuschanged (String provider, int status,Bundle Extras) {TODO auto-generated Method Stub } @Overridepublic void onproviderenabled (String provider) {TODO auto-generated Method Stub } @Overridepublic void onproviderdisabled (String provider) {TODO auto-generated Method Stub } @Overridepublic void onlocationchanged (Location L

Functionradian ($d) { $d *3.1415926535898/180.0;}functiondistance_calculate ($longitude 1, $latitude 1, $longitude 2, $latitude 2) { $radLat 1=adian ( $latitude 1); $radLat 2=radian ( $latitude 2); $a =radian ($ latitude1) -ra

*/ Private Const Double Earth_radius = 6378.137 ; Private Static Double Rad ( Double D ){ Return D * Math. PI/ 180.0 ;} /* ** Calculate the distance between two points, in meters, based on the longitude and latitude coordinates (double value) between two

center angle.Since R is determined, the arc AB length can be obtained as long as the angle θ between OA and OB is obtained. Arc AB = R * θ.Angle θ can be obtained through the vector formula: vector OA * vector OB = | OA | OB | cos θ.ThenCos θ = vector OA * vector OB/| OA | OB |= (Ax * Bx + Ay * By + Az * Bz)/R * R 4. Use latitude and longitude coordinates to rep

PHP implements the method of calculating the distance between map coordinates of Baidu, PHP coordinates In this paper, we describe the method of calculating the distance between Baidu map coordinates by PHP. Share to everyone for your reference, as follows: The following is

How to coordinate coordinates of GPS longitude and latitude Original article:Http://hi.baidu.com/myonlylovegg/blog/item/dacc24d4db648acc51da4b28.html It is easy to convert longitude and latitude to decimal.As follows:Decimal degrees = degrees + minutes/60 + seconds/3600Examp

Package xxtest; public class Test {//earth radius public static final Double Earth_radius = 6378137.0;//unit M private static DOUBL E Getrad (double D) {return d * math.pi/180.0; /** * Two coordinates (latitude and longitude) distance between calculation * GD/BD map using this algorithm * @param startlng start

final char[] CHARS = {' 0 ', ' 1 ', ' 2 ', ' 3 ', ' 4 ', ' 5 ', ' 6 ', ' 7 ', ' 8 ', ' 9 ', ' B ', ' C ', ' d ', ' e ', ' f ', ' g ', ' H ', ' J ', ' K ', ' m ', ' n ', ' P ', ' Q ', ' R ', ' s ', ' t ' , ' u ', ' V ', ' w ', ' x ', ' y ', ' z '};p rivate static Hashmap-------------------------------------------------------------------------------------------------Small welfare-------------------------------------------------------------------------------------------------Individual at the Geek

This article describes the method for PHP to calculate the maximum minimum latitude and longitude of 4 corners within 3 km of the current coordinates. Share to everyone for your reference, specific as follows: $LNG, $lat latitude and

Calculation of precise distance--java based on two-point latitude and longitude Baidu map pickup latitude and longitude coordinates: http://api.map.baidu.com/lbsapi/getpoint/index.html on the internet to see a lot of