In R, how do I translate one record with a single comma-separated field into multiple records?

Question

I\'m working in R.

I have a dataset in which some records contain a list of cities and counties instead of just one city or county. I\'m looking for a way to transpose

Answer 1

d = as.data.frame(do.call(rbind, strsplit(dtaFrame$cityCountry, ",")))
colnames(d) = c("city", "country")
cbind(dtaFrame[,-which(colnames(dtaFrame)=="cityCountry",], d)

should do it.