Is there any package in R to create a SAS transport file? I checked the help archive and did not find any references to creating SAS transport files in R, only reading them. Bill -- Bill Knebel, PharmD, Ph.D. Principal Scientist Metrum Research Group 2 Tunxis Road Suite 112 Tariffville, CT 06081 email: billk at metrumrg.com tel: (860) 930-1370