I have a square table and it has two na.strings (e.g. "A" and "B") that I need to turn into NA. So far I can turn either one of those into NA but not both. How should I do this? Can I use a function in that argument? If yes, what function should I use? I tried like (
na.strings = "A" | "B"
na.strings = "A | B"
loadfile<-read.table("test.csv", header=T, sep=",", na.strings="A | B")
na.strings takes a character vector, so...
loadfile <- read.table( "test.csv" , header = TRUE , sep="," , na.strings = c("A" , "B" ) )
From the helpfile:
na.strings: a character vector of strings which are to be interpreted as NA values