Cartesian product data frame

Question

I have three or more independent variables represented as R vectors, like so:

A <- c(1,2,3)
B <- factor(c(\'x\',\'y\'))
C <- c(0.1,0.5)

Answer 1

Using cross join in sqldf:

library(sqldf)

A <- data.frame(c1 = c(1,2,3))
B <- data.frame(c2 = factor(c('x','y')))
C <- data.frame(c3 = c(0.1,0.5))

result <- sqldf('SELECT * FROM (A CROSS JOIN B) CROSS JOIN C')