@Pure
	public static Point2d L4_EL2(double x, double y) {
		final Point2d ntfLambdaPhi = NTFLambert_NTFLambdaPhi(x, y,
				LAMBERT_4_N,
				LAMBERT_4_C,
				LAMBERT_4_XS,
				LAMBERT_4_YS);
		return NTFLambdaPhi_NTFLambert(
				ntfLambdaPhi.getX(), ntfLambdaPhi.getY(),
				LAMBERT_2E_N,
				LAMBERT_2E_C,
				LAMBERT_2E_XS,
				LAMBERT_2E_YS);
	}
@ Pure public static Point2d L4_EL2 ( double x , double y ) { final Point2d ntfLambdaPhi = NTFLambert_NTFLambdaPhi ( x , y , LAMBERT_4_N , LAMBERT_4_C , LAMBERT_4_XS , LAMBERT_4_YS ) ; return NTFLambdaPhi_NTFLambert ( ntfLambdaPhi . getX ( ) , ntfLambdaPhi . getY ( ) , LAMBERT_2E_N , LAMBERT_2E_C , LAMBERT_2E_XS , LAMBERT_2E_YS ) ; }
This function convert France Lambert IV coordinate to
extended France Lambert II coordinate.

@param x is the coordinate in France Lambert IV
@param y is the coordinate in France Lambert IV
@return the extended France Lambert II coordinate.