用于将 GPS 的坐标格式转成浮点数, 如 DMSToDecimal.convert("N 30d17m27.786712646484375s") => 30.282034

DMSToDecimal.java

import javax.xml.bind.DatatypeConverter;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

// 用于将 GPS 的坐标格式转成浮点数
// 如 DMSToDecimal.convert("N 30d17m27.786712646484375s") => 30.282034
public class DMSToDecimal {
    private static final String REGEXP = "(N|E|W|S)([\\.\\d\\s]+)d([\\.\\d\\s]+)m([\\.\\d\\s]+)s";

    private static double dmsToDecimal(String hemisphereOUmeridien,double degres,double minutes,double secondes){
        double LatOrLon=0;
        double signe=1.0;
        
        if((hemisphereOUmeridien.equals("W"))||(hemisphereOUmeridien.equals("S"))) {signe=-1.0;}
        LatOrLon = signe*(Math.floor(degres) + Math.floor(minutes)/60.0 + secondes/3600.0);
        
        return(LatOrLon);
    }
    
    // N 30d17m27.786712646484375s -> 30.282034
    public static double convert(String input) {
        Pattern p = Pattern.compile(REGEXP);
        Matcher match = p.matcher(input);
        double decimal = 0.0;
        if (match.matches() == true) {
            String h = match.group(1);
            double d = Double.parseDouble(match.group(2));
            double m = Double.parseDouble(match.group(3));
            double s = Double.parseDouble(match.group(4));
            decimal = dmsToDecimal(h, d, m, s);
        }
        return decimal;
    }

    public static void main(String[] args) {
        System.out.format("%f%n", convert("N 30d17m30.567626953125s"));
        System.out.format("%f%n", convert("E120d7m40.1599999999999966s"));
        System.out.format("%f%n", convert("E 119d4m47.017822265625s"));
        System.out.format("%f%n", convert("N 30d17m21.359710693359375s"));
        System.out.format("%f%n", convert("E120d2m42.0499999999999972s"));
        System.out.format("%f%n", convert("N0d0m0s"));
        System.out.format("%f%n", convert("S 30d16m55.322113037109375s"));
        System.out.format("%f%n", convert("W 120d3m40.1385498046875s"));
        // System.out.format("%f%n",a);
        // System.out.format("%f%n",DMSToDecimal("E",120,3,38.984985));
    }

}