Hello, thank you very much for your help in last email. it is very helpful. right now, i have more questions about my project, 1. solve can i remove the NA from a vectors: for exmample, if my vector is: v <- (NA, 1, 2, 3, 4, 5) how can I remove the NA from vector v 2. how I can get input from the user? 3. can I read more than one data files in one program? and how i can write something to a file 4. how i can display/output something on the screen? thank you so much Best wish C-Ming Jan 24, 2005
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