search for: afternon

Hello I'd like to write a script that would make it easier for people to call in, listen to the IVR, and make an appointment (eg. "When? ASAP? A given day?" -> "Morning? Afternon", etc.) I assume I'm not the first one to try and write this type of IVR, so would appreciate any feedback on writing this. Thank you.

Hello, I hope this question is not too stupid. I would like to know how to update levels after subsetting data from a data.frame. df <- data.frame(factor(c("a","a","c","b","b")), c(4,5,6,7,8), c(9,1,2,3,4)) names(df) <- c("X1","X2","X3") my.sub <- subset(df, X1 == "a" | X1 == "b")