# Re: [R] Setting max values for rpois

From: Giovanni Petris (GPetris@uark.edu)
Date: Thu 13 May 2004 - 07:31:49 EST

```Message-id: <200405122131.i4CLVnES006435@definetti.uark.edu>

```

Bret,

the following should do:

x <- sum(pmin(rpois(recruit.f, l),3))

Giovanni

> Date: Wed, 12 May 2004 16:11:08 -0500
> From: Bret Collier <bacolli@uark.edu>
> Sender: r-help-bounces@stat.math.ethz.ch
> Precedence: list
>
> R-users,
> I am simulating a birth process for 4 classes of individuals with
> l[i] being the average No. fetuses per individual. However, I need to
> bound the resulting values for each generated rpois to be <=3 (no
> individual can have > 3 offspring). I have not been able to figure out how
> to incorporate this into the below example. Any suggestions on integrating
> would be appreciated.
>
>
> recruit.f <- c(12, 12, 25, 51) #No. females in each age class
> l <- c(.05, 1.22, 1.6, 1.8) #mean No. fetuses for each age class
> x <- sapply(lapply(1:4, function(i) rpois(recruit.f[i], l[i])), sum)
>
> TIA,
>
> Bret A. Collier
> Arkansas Cooperative Fish and Wildlife Research Unit
> University of Arkansas
>
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> R-help@stat.math.ethz.ch mailing list
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>
>

```--
__________________________________________________
[                                                  ]
[ Giovanni Petris                 GPetris@uark.edu ]
[ Department of Mathematical Sciences              ]
[ University of Arkansas - Fayetteville, AR 72701  ]
[ Ph: (479) 575-6324, 575-8630 (fax)               ]
[ http://definetti.uark.edu/~gpetris/              ]
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