GeoTools：如何從GeodeticDatum實例獲取Bursa-Wolf參數

Question

我有一個類型爲GeodeticDatum的實例。我可以得到橢球的名字，壓扁，軸使用方法datum.getEllipsoid()和getName()，getInverseFlattening()等

我怎樣才能獲得布爾薩 - 沃爾夫參數（towgs84）無需轉換數據，以WKT字符串和手動解析它？

DATUM["New Zealand Geodetic Datum 1949", 
    SPHEROID["International 1924", 6378388.0, 297.0], 
    TOWGS84[59.47, -5.04, 187.44, 0.47, -0.1, 1.024, -4.5993]] 

Answer 1

ProjectedCRS crsFromWkt = (ProjectedCRS) CRS.parseWKT(/*OGC WKT of your projected coordinate system*/): 
DefaultGeodeticDatum defaultGeodeticDatum = new DefaultGeodeticDatum(crsFromWkt.getDatum()); 
     System.out.println(defaultGeodeticDatum.getBursaWolfParameters()[0].dx); 
     System.out.println(defaultGeodeticDatum.getBursaWolfParameters()[0].dy); 
     System.out.println(defaultGeodeticDatum.getBursaWolfParameters()[0].dz); 
     System.out.println(defaultGeodeticDatum.getBursaWolfParameters()[0].ex); 
     System.out.println(defaultGeodeticDatum.getBursaWolfParameters()[0].ey); 
     System.out.println(defaultGeodeticDatum.getBursaWolfParameters()[0].ez); 
     System.out.println(defaultGeodeticDatum.getBursaWolfParameters()[0].ppm);