[R] Population Decay in R

David Katz david at davidkatzconsulting.com
Tue Dec 16 01:30:32 CET 2008


jimdare wrote:
> Hi,
> I am new to R.  I am trying to plot the decay of a population over time
> (0-50yrs).  I have the initial population value (5000) and the mortality
> rate (0.26/yr) and I can't figure out how to apply this so I get a
> remaining population value each year.  In excel (ignoring headings) I
> would put 5000 in A1, in B2 I would enter the formula A1*0.26, and then in
> A2 (the next years population) I would subtract B2 from A1.  I would
> continue this process untill I had calculated the population for the 50th
> year.  Any ideas of how to do this in R?  :-/

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