Month: September 2020

// 체감온도값 = 13.12 + 0.6215*T - 11.37 * V^0.16 + 0.3965 * V^0.16 * T [ T: 기온(섭씨), V : 풍속(km/h) ]
public static double calculate(double T, double W) {
	double V = fromMStoKMH(W);
	double value = 0.0;
	if (V > 4.8) {
		value = 13.12 + 0.6215*T - 11.37 * Math.pow(V, 0.16) + 0.3965 * Math.pow(V, 0.16) * T;
		if (value > T) {
			value = T;
		}
	}
	else {
		value = T;
	}
	value = Math.round(value);
	return value;
}

// 열지수값 = -42.379 + (2.04901523*F) + (10.14333127*R) - (0.22475541*F*R) - (0.00683770*F*F) - (0.05481717*R*R) + (0.00122874*F*F*R) + (0.00085282*F*R*R) - (0.00000199*F*F*R*R) [F: 화씨온도, R: 상대습도]
public static double calculate(double T, double R) {
	double F = fromCelsiusToFahrenheit(T);
	double value = -42.379 + (2.04901523*F) + (10.14333127*R) - (0.22475541*F*R) - (0.00683770*F*F) - (0.05481717*R*R) + (0.00122874*F*F*R) + (0.00085282*F*R*R) - (0.00000199*F*F*R*R);	
	double adj = 0.0;
	if (R < 13.0 && F >= 80.0 && F <= 112.0) { adj = 0.25 * (13.0 - R) * Math.sqrt((17.0 - Math.abs(F - 95.0)) / 17.0); } if (R > 85.0 && F >= 80.0 && F <= 87) {
		adj = (R - 85.0)/10.0 * (87.0 - F) / 5.0;
		value += adj;
	}
	if (F < 80.0) {
		value = F;
	}
	value = fromFahrenheitToCelsius(value); // (celsius)
	value = Math.round(value * 10) / 10.0; // 소수점 첫째자리 반올림
	return value;
}

// 부패지수값 = (RH - 65)/14 * (1.054^T) [RH: 상대습도 (%), T: 기온 (섭씨)]
public static double calculate(double T, double RH) {
	double value = (RH - 65.0)/14.0 * Math.pow(1.054, T);
	value = Math.round(value * 100) / 100.0; // 소수점 두째자리 반올림

	return value;
}