[R] create matrix from comparing two vectors

[Benilton Carvalho]

outer(test, fac, "<")

-b

On Jun 26, 2007, at 2:13 PM, Van Campenhout Bjorn wrote:

> hi all, sorry for this basic question, I think I know I should use ? 
> apply, but it is really confusing me...
>
> I want to create a matrix by comparing two vectors.  Eg:
>
> test<-seq(1:10)
> fac<-c(3,6,9)
>
> and i want to end up with a 10*3 matrix with a boolean that tests  
> if test<fac, so something like:
>
> 1 1 1
> 1 1 1
> 0 1 1
> 0 1 1
> 0 1 1
> 0 0 1
> 0 0 1
> 0 0 1
> 0 0 0
> 0 0 0
>
> I can't find the solution without using a loop...
>
> B
>
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