tableau map latitude and longitude

/** * Map Tool * * @author DXM * */public class Maputil {//reference point private double[] D34 = null;private double[] d33 = Null;priva Te double[] gs34 = null;private double[] gs33 = null;//reference point location private double x34, y34;//calculation parameter private double A, B, C, bl;/** * Constructor * * @param ds34 reference point latitude and longitude

: This article mainly introduces how to determine which stores are closest to customers by longitude and latitude, for example, the nearest stores within 1000. if you are interested in PHP tutorials, refer to it. Recently, the company needs to query the stores closest to the customer's address through the customer's receiving address. the customer can pick up the goods at the nearest store. How can we calc

)/10000; String Distancestr= distance+ ""; Distancestr=Distancestr. SUBSTRING (0, Distancestr.indexof ("."))); returnDistancestr; } /*** Get the latitude and longitude values within a certain distance of the current user * unit meters return Minlat * min Longitude minlng * min latitude Maxlat * Maximum

these strings to form a complete binary string.private string Getgeohashbinarystring (string geohash) {if (Geohash = = NULL | | "". Equals (Geohash)) {return null;} StringBuffer sb = new StringBuffer (); for (int i = 0; i splitting a Geohash binary string into a latitude and longitude binary stringIn the last blog, it was introduced that the Geohash binary string is composed of a binary string of

GPS gets Location to obtain the longitude and latitude of the Location Point, gpslocation Use your mobile phone to obtain the longitude and latitude of the location: Location is often used in Android development. For example, you can obtain the weather by longitude and

Article reprinted address http://blog.sina.com.cn/s/blog_7bbfd5fd01017d1e.html thanks to the author.On the basis of the original text, I added a SQL statement, easy to understandMySQL distance calculation, Unit m, and sort lon longitude lat latitude the coordinate order shown on the general map is,latitude in front (ra

Android GPS obtains the coordinates of the current longitude and latitude In the APP, there may be a need to upload the coordinates of the current location to the server. Today, I provide three ways to obtain the coordinates of the longitude and latitude. The first is implemented through the Android API, the second is

(RADLAT1) * cos (RADLAT2) * Power (sin (B/2), 2)); S: = S * Earth_padius; S: = Round (S * 10000)/10000; return s; End Next is the stored procedure that I wrote myself: CREATE OR REPLACE PROCEDURE distance_maintunit (p_cur out Sys_refcursor, Center_lat in number, center_lng in number) I S v_muids VARCHAR (MB); V_distance NUMERIC (9,6); BEGIN for L_record in (SELECT * from M_maintenaceunit) LOOP Select Getdistance (L_record. Lat,l_record. LONGI