ex3.R

###################################
#  uRos 2018 data.table tutorial  #
#                                 #
#  Exercise 3                     #
###################################


#--------------------------
# get the data
#--------------------------

library(data.table)

air <- data.table(airquality)


#------------------------------------------------------------
# 3.1
# Change the Wind column from miles per hour
# to kilometers per hour (1 mph = 1.6 kmh)
#------------------------------------------------------------





#------------------------------------------------------------
# 3.2
# Calculate a new 'chill' variable (Wind * Temperature)
#------------------------------------------------------------






#------------------------------------------------------------
# 3.3
# Calculate the average chill by month and
# add that as a new variable
#------------------------------------------------------------






#------------------------------------------------------------
# 3.4
# Remove the Ozone and Solar.R columns
#------------------------------------------------------------