Styjun

Please check the code which i tried to write with the help of the link suggested by people below. Please tell whether i have implemented the logic correctly or not. I have pasted the data in excel sheet to see its plot on http://www.copypastemap.com/map.php
`

import java.io.File;
import java.io.IOException;

import jxl.Workbook;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
import jxl.write.WriteException;
import jxl.write.biff.RowsExceededException;

public class FindingLatLongAlongACircle 
static double latitude= 35.306614; 
static double longitude= -80.7444093;
//static double circumofEarth= 40075000;
static double R=20;


public static void main(String[] args) throws IOException 
 File f= new File("C:\Users\Manu Chaudhary\Desktop\LatongAroundaPoint.xls");
 WritableWorkbook myexcel= Workbook.createWorkbook(f);
 WritableSheet mysheet= myexcel.createSheet("mysheet",0);

 int YAxis1=0;
 int YAxis2=0;
 // Added now
 jxl.write.Label k1;
 jxl.write.Label k2;

 double angle=0;
 double angleRadian=0; 
 // double changeInLat;
 //double changeInLong;
 double dx;
 double dy;
 double final_latitude=0;
 double final_longitude=0;

 double delta_longitude;
 double delta_latitude;

 while(angle<360)
 angle=angle+15;
 angleRadian= Math.toRadians(angle);
 dx= R* Math.sin(angleRadian);
 dy= R* Math.cos(angleRadian);
 //changeInLat= (distance* Math.cos(angleRadian))/(circumofEarth* Math.cos(lat1));
 //changeInLong= (distance*Math.sin(angleRadian))/circumofEarth;

 //newLatitude= lat1+changeInLat;
 //newLongitude=long1+ changeInLong;
 delta_longitude= dx/(111320* Math.cos(latitude));
 delta_latitude= dy/110540;
 final_latitude= latitude+ delta_latitude;

 final_longitude=longitude+ delta_longitude;
 YAxis1++;
 YAxis2++;

 k1= new jxl.write.Label(0,YAxis1,Double.toString(final_latitude));
 k2= new jxl.write.Label(1,YAxis2,Double.toString(final_longitude));

 try 
 mysheet.addCell(k1);
 catch (RowsExceededException e) 
 // TODO Auto-generated catch block
 e.printStackTrace();
 catch (WriteException e) 
 // TODO Auto-generated catch block
 e.printStackTrace();
 
 try 
 mysheet.addCell(k2);
 catch (RowsExceededException e) 
 // TODO Auto-generated catch block
 e.printStackTrace();
 catch (WriteException e) 
 // TODO Auto-generated catch block
 e.printStackTrace();
 

 System.out.println("The value of latitude at "+ angle + " angle is"+ final_latitude);
 System.out.println("The value of longitude at "+ angle + " angle is"+ final_longitude);


 
 myexcel.write();

 try 
 myexcel.close();
 catch (WriteException e) 

 e.printStackTrace();
 System.out.println("Finish"); 
 

 

`Suppose i know the latitude and longitude of a point. Can i calculate the latitude and longitude all around the point(approx. 16 points) if i know the distance of separation? I searched the stackoverflow and found two useful links.

• Calculate second point knowing the starting point and distance


• Google Maps V3 Circle & Circle that I created do not match

For making the question clear please see the Latitudes and longitudes required. Please help me with a code in python.

This is just basic trig:

θ = angle of elevation in a triangle formed by connecting an outer dot to the center dot, then extending a 90º line horizontally from the center dot until an altitude can connect the two priorly drawn lines

ec = earth's circumference

distance•cos(θ)/(ec•cos(latitude)) = Δlong

distance•sin(θ)/ec = Δlat

Please attempt some code, this site isn't to have people do your homework.