bike.csv <- read.csv("bike_sharing_data.csv")
class("humidity")
## [1] "character"
str("humidity")
## chr "humidity"
bike.csv[6251, "season"]
## [1] 4
sort(table(bike.csv$season), "season" = 4)
##
## 4 1 2 3
## 4232 4242 4409 4496
dim(subset(bike.csv, windspeed >= 40 & season %in% c(1,4)))
## [1] 46 13