Closed ds4ci closed 9 years ago
If you look under the hood of that function you see:
group <- hijack(r_sample_binary_factor,
name = "Group",
x = c("Control", "Treatment")
)
This is just using the function r_sample_binary_factor
with some defaults for cotrol/treatement. That means it's not possible to use group
to make more than 2 groups. I can certainly see where you might expect groups
to allow n groups but that was not my intent. I will keep the functionality as is because 2 group sampling is more common in my experience when we create groups and making it extended to n groups means a slower function. Most of the little variable generating functions are actually just hijacking
a function prefixed r_
. So if you can't find a variable function you're looking for go to the r_
prefixed functions, in this case r_sample_factor
:
tg <- r_sample_factor(n=100, x=c("a", "b", "c"), prob = c(0.1, 0.2, 0.7), name = "test")
## > tg <- r_sample_factor(n=100, x=c("a", "b", "c"), prob = c(0.1, 0.2, 0.7), name = "test")
## > summary(tg)
## a b c
## 8 18 74
I'm going to close this for now. Feel free to reopen if this does not address your concerns. I'll update documentation to be clearer..
Thanks for wakefield!
I need to generate factors with more than two levels. group() accepts x with length > 2, but only samples first two. Here is a toy example:
HTH, Jim