I am working with weatherAUS dataset that is avaiable in the R libraries. I am trying to replace "Yes" to 1 and "No" to 0 in the RainTomorrow column.
I wrote this but it doesn't seem to work:
weather4$RainTomorrow[weather4$RainTomorrow=="Yes"]<-1
I just says:
Warning message: In
[<-.factor(*tmp*, weather4$RainTomorrow == "Yes", value = c(NA, : invalid factor level, NA generated
What does it mean and what should I do? I reckon I should use as.numeric or as.factor somewhere but I don't know how really.