Expand a survey sample with R

Question

I would like to expand a sample survey and simulate a population. For example, if I have the following data sample(very small for explain my question) like

control weight  sex age  race
      1      2    F   23    W
      2    3.1    M   21    B
      3    5.3    F   19    W

In this case, control represents the interviewed people. For example, I would like get a dataframe where the control 1 (some person, sex female , 23 yeard old and white) repeats 2 times(2 rows). The dificult arises when I try to repeats 3.1 times the control number 2 and 5.3 the contol number 3, preserving the sex, age and race.

There is the "survey" package, but I don't know if there is some function for this situation.

How can I find a solution for this problem?

Answer 1

If you need the expand the rows of the dataset, based on the value in the 'weight' column, one option would be expandRows from splitstackshape. This will be similar to df1[rep(1:nrow(df1), weight),].

 library(splitstackshape)
 expandRows(df1, 'weight')