[R] Generate strings from multiple variables

[Johannes Radinger]

Hi,

it is easiest to explain what I want to do by an example:

lets assume there are two factors/variables:
A <- c(1,2,3)
B <- c(1,3,3)

Now I would like to generate a list of strings that should look like
("A1_B1","A1_B2","A2_B1","A2_B2"). So actually the string
contains all possible combinations of A and B (separated by _). This should
be also possible for more variables. Is there simple way
to that? I thought about looping over A and B (nested for-loop)
but maybe there is a straight foward solution to get such strings.

/johannes


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