On Aug 13, 2010, at 4:06 PM, fishkbob wrote:
list<-seq(2,10,2)
list
[1] 2 4 6 8 10
list[-which(2==list)]
[1] 4 6 8 10
using the which() will let you remove things from a list that have a
specified value... I usually use the
blah<- blah[-which(TRUE==is.na(blah)) ]
which will remove all NA values in your list
Although which() is useful when used with "[" because it avoids the NA
indexing problem, it is entirely superfluous here.
blah<- blah[-is.na(blah) ] # will be more efficient
--
David Winsemius, MD
West Hartford, CT
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