[R] multiple logical comparisons

Erik Iverson eriki at ccbr.umn.edu
Mon Mar 22 00:12:23 CET 2010

Martin Batholdy wrote:
> thanks!
> Now I have one more question;
> How can I do the reverse?
> when %in% is == (for two vectors of different lengths); what is the equivalent to !=  ?

a %in% b returns a logical vector, so

!a %in% b

returns its negation.  See order of precedence in ?Syntax.

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