Generate strings from multiple variables
do.call(function(x,y) paste0("A",x,"_","B",y),expand.grid(x = A,y = B))
seems to be a place to start. Robust generalization seems a hair
tricky -- I'll mull on it.
Michael
On Fri, May 4, 2012 at 9:10 AM, Johannes Radinger <JRadinger at gmx.at> wrote:
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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