If possible I would like to combine two different character arrays in combinations

Array1 <- c("height","weight","age","sex")

Array2 <- c("trt0","trt1","trt2")

I would like to combine these two character vectors to end up with such ...

Array3

"height.trt0.trt1"
"height.trt0.trt2"
"weight.trt0.trt1"
"weight.trt0.trt2"
"age.trt0.trt1"
"age.trt0.trt2"
"sex.trt0.trt1"
"sex.trt0.trt2"

I'm trying combinations of the "combinations" and "paste" functions, but no luck yet!
Any suggestions about most efficient approach most welcome.
Thanks

Jim

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Dr. Jim Maas
University of East Anglia


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