rsequences

Numbers in Geometric Progression

How can i generate a sequence of numbers which are in Geometric Progression in R? for example i need to generate the sequence : 1, 2,4,8,16,32 and so on....till say a finite value?

Solution

  • Here's what I'd do:

    geomSeries <- function(base, max) {
    base^(0:floor(log(max, base)))
}

geomSeries(base=2, max=2000)
# [1]    1    2    4    8   16   32   64  128  256  512 1024

geomSeries(3, 100)
# [1]  1  3  9 27 81