list - R select element by using probability proportional of the elements

Question

Closed. This question needs details or clarity. It is not currently accepting answers. question from:https://stackoverflow.com/questions/65843380/r-select-element-by-using-probability-proportional-of-the-elements

Answer 1

The basic sample function can do this. I'm not exactly sure what you want to achieve but this is an example:

numbers<-c(7,5,3,3,2,1,1,1,1)
samp<-sample(1:length(numbers), 100000, T, numbers)
table(samp)/ length(samp)
#> samp
#>       1       2       3       4       5       6       7       8       9 
#> 0.29342 0.20677 0.12728 0.12412 0.08271 0.04187 0.04086 0.04175 0.04122
numbers/sum(numbers)
#> [1] 0.29166667 0.20833333 0.12500000 0.12500000 0.08333333 0.04166667 0.04166667
#> [8] 0.04166667 0.04166667

^{Created on 2021-01-22 by the reprex package (v0.3.0)}