[R] combination of different vector values

[Wiener, Matthew]

Take a look at expand.grid.  It sounds like it might solve your problem.

Hope this helps,
Matt

-----Original Message-----
From: Ngayee.Law at celeradiagnostics.com
[mailto:Ngayee.Law at celeradiagnostics.com]
Sent: Friday, June 14, 2002 1:16 PM
To: r-help at stat.math.ethz.ch
Subject: [R] combination of different vector values


Hi,

Thanks in advance for the help.

I have a few vectors and I need to get all the combinations of the vector
values.
Normally I would use a few for-loops to do that.
e.g  x1_c(1,3,5)
     x2_c(2,5,6)
     for (i in x1) {
       for (j in x2) {
          ...
     }}

My problem is that I don't know how many vectors there are ahead of time,
so
I don't know how many for-loops I need. Any ideas how to implement this?

- Jacqueline




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