data(x100)
# First, block
out <- block(x100, groups = "g", n.tr = 2, id.vars = c("id"), block.vars
= c("b1", "b2"), algorithm="optGreedy", distance =
"mahalanobis", level.two = FALSE, valid.var = "b1",
valid.range = c(0,500), verbose = TRUE)
# Second, assign
assigned <- assignment(out, seed = 123)
# assigned$assg contains 3 data frames
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