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.

Answer 2

You can use the function colsplit in package reshape2:

x <- c("a, b", "c, d", "e")
library(reshape2)
colsplit(x, ",", names=c("City", "County"))

  City County
1    a      b
2    c      d
3    e