calculate distance between coordinates

/** * @desc calculates distance according to latitude and longitude between two points * @param float $lat latitude value * @param float $LNG Longitude value */function Getdistance ($lat 1, $lng 1, $lat 2, $LN 　　G2) {$earthRadius = 6367000; 　　$lat 1 = ($lat 1 * PI ())/180; 　　$LNG 1 = ($lng 1 * PI ())/180; 　　$lat 2 = ($lat 2 * PI ())/180; 　　$LNG 2 = ($lng 2 * PI ())/180; 　　$calcLongitude = $lng 2-$LNG 1; 　　$calcLatitude = $lat 2-$lat 1; $stepOne = Pow

The Transportation Company calculates the freight for the user. the longer the distance, the lower the freight rate per kilometer. the basic freight per kilometer per ton is P = 3, the weight is W, the distance is S, the discount is d, the formula for calculating total freight F is f = p * w * S * (1-D ). The discount rules are as follows:S 250 500 1000 2000 3000 Please write a program to automatically

Public double getdistance (double startlat, double startlong, double endlat, double endlong ){// Startlong start coordinate point longitude// Start coordinate point dimension of startlat// Endlong target coordinate point longitude// Endlat target coordinate point dimension double LAT1 = (math. PI/180) * startlat; double LAT2 = (math. PI/180) * endlat; double lon1 = (math. PI/180) * startlong; double lon2 = (math. PI/180) * endlong; // the radius of the earth is double r = 6371; // the

*)); return [deg, Min, sec]; } 2. Degrees, minutes, seconds to decimal latitude and Longitude view plain copy to clipboard print? function Deg2dec (deg, Min, sec) {var deg = Math.Abs (deg); var min = math.abs (min); var sec = Math.Abs (sec); return deg * 1 + (sec * 1 + min * 60)/3600; } function Deg2dec (deg, Min, sec) {var deg = Math.Abs (deg); var min = math.abs (min); var sec = Math.Abs (sec); return deg * 1 + (sec * 1 + min * 60)/3600; } 3.

In this paper, the method of calculating the distance between two latitude and longitude of Golang and PHP is described. Share to everyone for your reference, as follows: Golang version: Copy the Code code as follows: Package MainImport ("FMT""Math")Func Main () {LAT1: = 29.490295Lng1: = 106.486654LAT2: = 29.615467Lng2: = 106.581515Fmt. Println (Earthdistance (LAT1, Lng1, LAT2, lng2))}The unit of return value is in metersFunc earthdistance (LAT1, Lng

Tags: gdb bufferThe starting address of the buffer, that is, the starting address of the variable buffer is: 0xbfffefd0function foo return address is: 0XBFFFEFFCSo the distance between the buffer start address and the function foo return address is:0xbfffeffc-0xbfffefd0 =1c = 28 bytesThe following is the complete debugging process:From here you can see the value of the Lbuffer variableGDB Debugging Practice-Debug Executable program,

This article is about how PHP uses latitude and longitude to calculate the distance between two points (pure code), there is a certain reference value, the need for friends can refer to, I hope to help you. Function rad ($d) { return $d * 3.1415926535898/180.0;} function Getdistance ($lat 1, $lng 1, $lat 2, $lng 2) { $EARTH _radius = 6378.137; $radLat 1 = rad ($lat 1); $radLat 2 = rad ($lat

#include 　　Calculate the distance of a string--dynamic programming

public static double Getdistance (double long1, double lat1, double long2,Double lat2) {Double A, B, R;R = 6378137; Earth radiusLAT1 = LAT1 * math.pi/180.0;LAT2 = Lat2 * math.pi/180.0;A = LAT1-LAT2;b = (long1-long2) * math.pi/180.0;Double D;Double SA2, SB2;SA2 = Math.sin (a/2.0);SB2 = Math.sin (b/2.0);D = 2* R* Math.asin (MATH.SQRT (SA2 * SA2 + math.cos (LAT1)* MATH.COS (LAT2) * SB2 * sb2));return D;}public static double Getangle (double lat_a, double lng_a, double lat_b, double lng_b){Double d

I did not know this for a long time. I forgot it. I saw it in a book before. But what I found on the Internet was actually a spherical distance algorithm. Lat is the latitude, and lung is the longitudeA = Lat1-Lat2 is the difference between two points of latitude B = Lung1-Lung2 is the difference between two points of longitude;6378.137 (KM) is the earth's radius --@ Well, the result is also km ...... In addition, google's api has actually been imple

The formula is as follows, Unit meter: 1th Latitude: lng1 lat1 2nd latitude and Longitude: lng2 lat2round (6378.138*2*asin (Pow ((sqrt () LAT1*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*pi ()/180-lat*pi ()/180)/2), 2) +cos ( 22.299439*pi ()/180) *cos (Lat*pi ()/180) *pow (SIN ((114.173881*pi ()/180-lng*pi ()/180)/2), 2))) *1000) as Julifrom

##121.308364,30.225778 Example Comparison of coordinatesSelect * fromBroadcastswhereLocation!="' and sqrt( ( ((121.308364-Longitude)*PI()*12656*Cos(((30.225778+Latitude/2)*PI()/ the)/ the) * ((121.308364-Longitude)*PI()*12656*Cos(((30.225778+Latitude/2)*PI()/ the)/ the) ) + ( ((30.225778-Latitude*PI()*12656/ the) * ((30.225778-Latitude*PI()*12656/ the) ) ) -Specify latitude and longitude to calc