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2010 Mar 09
3
sorting data whilst ignoring NA's
Hello, I am very new to R and have hit my first main problem that I hope someone can easily resolve. I have some data that looks like this (there are 20,000 rows): > qdata day month year flow [1,] 2 10 1945 NA [2,] 3 10 1945 NA [3,] 4 10 1945 NA [4,] 5 10 1945 NA [5,] 6 10 1945 2.973 [6,] 7 10 1945 NA