Hello -- I am trying to create a dataframe whose rows are the cross product of
rows in two other dataframes. Here's an example:
A = data.frame(F1=c('1','2','3','2'))
B = data.frame(F2=c('4','5'))
C = data.frame()
for (x in unique(A[,'F1'])) {
C = rbind(C, cbind(F1=x,B))
}
How can I achieve this without the for loop? Thanks.
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