gps coordinates lookup

This article describes how to use PHP to calculate the distance between two GPS coordinates of Baidu Map. it is a typical application developed for Baidu map interface, for more information about how to calculate the distance between two GPS coordinates on Baidu map using PHP, see the following example. Share it with y

How can we use php to calculate the distance between two GPS longitude and latitude coordinates when using Baidu map? Now we will share the function code with you. How can we use php to calculate the distance between two GPS longitude and latitude coordinates when using Baidu map? Now we will share the function code wi

Original: php+ Baidu map Api+javascript implementation of GPS coordinates and Baidu coordinate conversion examplephp+ Baidu Map Api+javascript implementation of GPS coordinates and Baidu coordinate conversion example

The following is my PHP code used to calculate the distance between two GPS longitude and latitude coordinates. If you need it, you can use it directly. The code is as follows:Copy code /*** Calculate the distance between two coordinates (meters)* @ Param float $ fP1Lat start point (latitude)* @ Param float $ fP1Lon start point (longitude)* @ Param float $ fP

PHP searches nearby based on gps coordinates Define ('Earth _ RADIUS ', 6370.6935 ); Function vicinity ($ lng, $ lat, $ distance = 0.5 ){ // $ Distance = 0.5; // unit: 10 KM $ Radius = EARTH_RADIUS; $ Dlng = rad2deg (2 * asin (sin ($ distance/(2 * $ radius)/cos ($ lat ))); $ Dlat = rad2deg ($ distance * 10/$ radius );

) * Math.Cos (LATITUDE1); M = A * ((1-E2/4-3 * E2 * E2/64-5 * E2 * E2 * e2/256) * Latitude1-(3 * E2/8 + 3 * E2 * E2/32 + * E2 * E2 * e2/1024) * Math.sin (2 * latitude1) + (* E2 * e2/256 + * E2 * E2 * e2/1024) * Math.sin (4 * latitude1)-( * E2 * E2 * e2/3072) * Math.sin (6 * latitude1)) Xval = NN * (A + (1-t + C) * A * A * A/6 + (5-18 * t + T * t + * C-58 * ee) * A * a * a * a * a/120); yval= M + NN * Math.tan (LATITUDE1) * (A * A/2 + (5-t + 9 * C + 4 * c * C) * A * a * a * a/24 + (61-58 * t + T

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/3600Example: 57 ° 55 '56. 6 "= 57 + 55/60 + 56.6/3600 = 57.9323888888888114 ° 65 '24. 6 "= 114 + 65/60 + 24.6/3600 = calculate the result by you

Main.c#include #includestring.h>#include#includeintMain () {Char* str ="123,456,789,0123456,123456,0,09,10"; Charsub[3]; intCount =0, index =0; for(index =0; Index index) { if(Str[index] = =',') ++count; if(Count = =6) Break; } strncpy (Sub,str[index+1],2); sub[2] =' /'; printf (sub); //123,456,789 intn =atoi (sub); printf ("string =%s integer =%d\n", Sub, n);}EndC-Language string lookup (NMEA protocol parsing for