Try: a[rowSums(is.na(a)) <= 2, ] Andy
From: Xiao Shi Hi everybody, Maybe this question is quite simple but i just don't know how to make it. I have a matrix a somewhat like this one but bigger:
a
f g h i j k a NA NA 11 16 21 26 b NA NA 12 17 22 27 c NA 8 13 18 23 28 d NA 9 14 19 24 29 e NA 10 15 20 25 30 And i want to get the rows which at most have 2 Na. Thanks in advance. Shi Jiantao [[alternative HTML version deleted]]
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