## Exercise 3. # First create a script “exercise3.R” and save it to the “Rintro/day1” directory: you will save all your commands in it for that exercise. # 1. Create a directory “exercise3” (in Rintro/day1/exercise3) dir.create("exercise3") # 2. Go to directory “exercise3” setwd("exercise3") # 3. Scan elements from ex3_input.txt, and save into object z. # ex3_input.txt is in: /users/bi/public-docs/sbonnin/Rcourse/ex3_input.txt z <- scan("/users/bi/public-docs/sbonnin/Rcourse/ex3_input.txt") # 5. Sort elements of z and save into object zsorted. zsorted <- sort(z) # 6. Write zsorted into file ex3_output.txt. # Note: set option ncolumns to 1. write(zsorted, "ex3_output.txt", ncolumns=1) # 7. Go back to the Rintro directory in the home directory. setwd("~/Rintro") # Note: ~ is the home directory. Your home directory in the Isilon storage where we work on now is /users/[yourgroup]/[yourpseudo]. e.g. /users/bi/sbonnin. # 9. Save exercise3.R file and source it. # Code -> Source # Do you get any error? Time to debug! # Does directory “exercise3” contain “ex3_output.txt” file? Check its contents!