Return a sample from a vector within a grouping variable if specified.
resample(x, size = NULL, replace = FALSE, prob = NULL, by = NULL)
x | numeric vector |
---|---|
size | the number of items to sample within each group, as a positive
number or a vector of numbers equal in length to the number of groups. If
|
replace | if |
prob | a vector of probability weights for values in |
by | a grouping vector equal in length to |
x
resampled within groups
set.seed(100) grvec <- c(rep("a", 3), rep("b", 4), rep("c", 3)) quanteda:::resample(1:10, replace = FALSE, by = grvec) #> [1] 2 1 3 7 6 4 5 9 10 8 quanteda:::resample(1:10, replace = TRUE, by = grvec) #> [1] 2 2 3 5 5 6 6 10 10 9 quanteda:::resample(1:10, size = 2, replace = TRUE, by = grvec) #> [1] 1 3 6 7 9 8 quanteda:::resample(1:10, size = c(1, 1, 3), replace = TRUE, by = grvec) #> [1] 2 6 9 8 10