how to get such a subset of a matrix?

Sundar Dorai-Raj · 2005-05-06T13:34:47Z

Xiao Shi wrote on 5/6/2005 6:21 AM: > 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 > How about: a[rowSums(is.na(a)) < 2, ] HTH, --sundar

Xiao Shi how to get such a subset of a matrix? May 6

robin hankin how to get such a subset of a matrix? May 6

Sundar Dorai-Raj how to get such a subset of a matrix? May 6

Dimitris Rizopoulos how to get such a subset of a matrix? May 6

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