Chapter 4, Problem 29P

The heat index HI, calculated from the air temperature and relative humidity, is the apparent temperature felt by the body. An equation used by the National Weather Service for calculating the HI is given by: $HI=-\text{42}.\text{379}+\text{2}.0\text{49}0\text{1523}T+\text{1}0.\text{14333}127R-0.\text{2247554}1TR-\text{6}.\text{83783}\times \text{1}{0}^{-\text{3}}{T}^{\text{2}}-\text{5}.\text{481717}\times \text{1}{0}^{-\text{2}}{R}^{\text{2}}+\text{1}.\text{22874}\times \text{1}{0}^{-\text{3}}{T}^{\text{2}}R+\text{8}.\text{5282}\times \text{1}{0}^{-\text{4}}T{R}^{\text{2}}-\text{1}.\text{99}\times \text{1}{0}^{-\text{6}}{T}^{\text{2}}{R}^2$ where T is the temperature in °F, and R is the relative humidity in integer percentage. Write a MATLAB program in a script file that displays the following chart of heat index for given air temperature and relative humidity in the Command Window:

Temperature (F)

80 82 84 86 88 90 92 94

Relative

Humidity

(%)

50 81 83 85 88 91 95 99 103

55 81 84 86 89 93 97101106

60 82 84 88 91 95100 105 110

65 82 85 89 93 98 103 108 114

70 83 86 90 95 100 106 112 119

75 84 88 92 97 103 109 116 124