Examples

The heatindex package has one function, which is also called heatindex. The heatindex function takes two arguments: the absolute air temperature in Kelvin and the relative humdity from 0 to 1. Below are some (rather trivial) examples.

Calculate a single value of the heat index

Given a single temperature, e.g., 300 K, and a single relative humidity, e.g., 0.5, we can calculate the heat index as follows.

• R
• Python

library(heatindex)
heatindex(300,0.5)

import heatindex as hi
hi.heatindex(300,0.5)

This returns the heat index in Kelvin.

Calculate an array of heat index values

If, instead, we have an array of temperature and an array of relative humidity, we can feed those to heatindex and it will return an array of heat index values.

• R
• Python

library(heatindex)
T <- matrix(301:312,nrow=3,byrow=TRUE)
rh <- matrix(1:12/12,nrow=3,byrow=TRUE)
heatindex(T,rh)

import numpy as np
T  = np.linspace(301, 312, 12).reshape(3, 4)
rh = np.linspace(1, 12, 12).reshape(3, 4)/12
hi.heatindex(T,rh)

This returns a 3 x 4 matrix of heat index values in Kelvin.