On Wednesday 14 July 2010 09:06:01 pm Addi Wei wrote: > I combined 2 data frames together using rbind... How do I unbind the data > at a specific row to create 2 separate data frames? > if you have a column with an identifier: try split() Example: split(iris, iris$Species) -- ---- Friedrich Schuster Dompfaffenweg 6 69123 Heidelberg