Re: [R] How to do a stochastic model in R

2010-11-23 Thread David Winsemius
This wasn't a completed answer. (I hit the send button by accident.) The code only fills in a small poertion of the matrix. ) -- David. On Nov 23, 2010, at 4:48 PM, David Winsemius wrote: On Nov 23, 2010, at 3:26 PM, Barroso, Judit wrote: Dear all of you, I would like to get some help fr

Re: [R] How to do a stochastic model in R

2010-11-23 Thread David Winsemius
On Nov 23, 2010, at 3:26 PM, Barroso, Judit wrote: Dear all of you, I would like to get some help from you. Here I attach you a model, that I would like to be stochastic so I would need each time the value of x changed, the values of parameters (ss, emrg, gf, spp, sr) did too according to

Re: [R] How to do a stochastic model in R

2010-11-23 Thread Carl Witthoft
Seems to me you're going about it in a bit of a difficult way. Assuming you know you want to run 20 samples (x = 1 to 20), just generate sets of 20 random variables for each of your inputs. for example, ss <-rnorm(20,mean=.3, sd=.08) Then inside the loop, replace "ss" with "ss[x]" By the