5.11 Updating variables within a for loop

We also need to update the allele frequency in every iteration of the for loop. We do this by adding a freq variable that keeps track of the current AF:

# start an initial AF of 0.5
freq <- 0.5

for (i in 1:3) {
  # run rbinom to generate the AF for the next generation
  new_freq <- rbinom(n = 1, size = 100, prob = freq) / 100
  # print new AF
  print(new_freq)
  # update `freq` in each iteration of the loop
  freq <- new_freq
}

## [1] 0.53
## [1] 0.51
## [1] 0.52