JAVA获取多个经纬度的中心点

经纬度的实体类

import lombok.Data;

@Data
public class GeoCoordinate {
    private double latitude;
    private double longitude;

    public GeoCoordinate(double latitude, double longitude) {
        this.latitude = latitude;
        this.longitude = longitude;
    }

    public String ToString() {
        return String.format("{0},{1}", latitude, longitude);
    }
}

算法

/**
     * 根据输入的地点坐标计算中心点
     *
     * @param str ( 118.778076,30.905645;118.780764,30.914549;118.782928,30.9186;118.785621,30.92202; )
     * @return
     */
    public static GeoCoordinate getCenterPoint(String str) {
        String[] arr = str.split(";");
        int total = arr.length;
        double X = 0, Y = 0, Z = 0;
        for (int i = 0; i < arr.length; i++) {
            double lat, lon, x, y, z;
            lon = Double.parseDouble(arr[i].split(",")[0]) * Math.PI / 180;
            lat = Double.parseDouble(arr[i].split(",")[1]) * Math.PI / 180;
            x = Math.cos(lat) * Math.cos(lon);
            y = Math.cos(lat) * Math.sin(lon);
            z = Math.sin(lat);
            X += x;
            Y += y;
            Z += z;
        }

        X = X / total;
        Y = Y / total;
        Z = Z / total;
        double Lon = Math.atan2(Y, X);
        double Hyp = Math.sqrt(X * X + Y * Y);
        double Lat = Math.atan2(Z, Hyp);

        return new GeoCoordinate(Lat * 180 / Math.PI, Lon * 180 / Math.PI);
    }

    /// <summary>
    /// 根据输入的地点坐标计算中心点
    /// </summary>
    /// <param name="geoCoordinateList"></param>
    /// <returns></returns>
    public static GeoCoordinate getCenterPointFromListOfCoordinates(java.util.List<GeoCoordinate> geoCoordinateList) {
        int total = geoCoordinateList.size();
        double X = 0, Y = 0, Z = 0;
        for (GeoCoordinate g : geoCoordinateList) {
            double lat, lon, x, y, z;
            lat = g.getLatitude() * Math.PI / 180;
            lon = g.getLongitude() * Math.PI / 180;
            x = Math.cos(lat) * Math.cos(lon);
            y = Math.cos(lat) * Math.sin(lon);
            z = Math.sin(lat);
            X += x;
            Y += y;
            Z += z;
        }
        X = X / total;
        Y = Y / total;
        Z = Z / total;
        double Lon = Math.atan2(Y, X);
        double Hyp = Math.sqrt(X * X + Y * Y);
        double Lat = Math.atan2(Z, Hyp);
        return new GeoCoordinate(Lat * 180 / Math.PI, Lon * 180 / Math.PI);
    }

### 参考文章

主要参考：C#版

https://blog.csdn.net/yl2isoft/article/details/16368397

 详细的算法说明，可以参考。

http://www.geomidpoint.com/calculation.html

自己写完才发现的java版

https://blog.csdn.net/weixin_42402326/article/details/93751115