[R] multiple logical comparisons

[Erik Iverson]

Martin Batholdy wrote:
> Hi,
> 
> I would like to compare a column of data with a vector.
> 
> I have this data.frame for example;
> 
> x <- data.frame(A = c(1:5), B = c(1,1,2,2,2))
> 
> Now I have a search vector:
> 
> search <- c(1,3,5)
> 
> 
> when I now try to get all the data-rows which have a 1, a 3, or a 5 in column A and a 2 in column B, 
> I tried this:
> 
> x[x$B == 2 & x$A == search,]
> 
> 
> I hoped to get 
> 3 2
> 5 2
> as output.

See ?%in%

x[x$B == 2 & x$A %in% search, ]