Hello, I have a simple problem (checked the archives and the
appropriate help pages, to no avail). I want to creat a vector that
is length(2000). The vector is to consist of two strings( "std" and
"dev") with 1760 "std"s and 240 "dev"s. Furthermore, for each element
of the vector, i want the selection of one of the strings to be
approx. random. The end result will be a vector with the following
proportions: .12 "dev" and .88 "std". My solution, below, almost
works, but i don't get the exact desired proportions:
sample.from.vector <- c(rep("std",1760),rep("dev",240))
make.vector <- rep(99,2000)
for (i in 1:2000){
make.vector[i] <- sample(sample.from.vector,1,replace=F)
}
As I understand the above code (which is not very well, obviously),
each iteration assigns one element from the sample.from.vector to the
current make.vector element; the element choosen from
sample.from.vector is tagged so that i is not selected again.
However, after the loop, make.vector contains, for example, 1758 stds
and 242 devs. Each iteration results in a different proportion of
stds and devs (although close to the desired, not right on).
Any help would be greatly apprecitated.