Poisson regression

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Message: 2
Date: Thu, 24 May 2012 11:41:06 +0430
From: Mahnaz Rabbaniha<rab.mahnaz at gmail.com>
To: r-sig-ecology<r-sig-ecology at r-project.org>
Subject: [R-sig-eco] Poisson regression
Message-ID:
	<CANLCanXsF0zpyC-R22F32VeEEyJq7KfN8KsGKXFfC44UtY_64Q at mail.gmail.com>
Content-Type: text/plain

Dear all


to find relation between non-normal response with independents variable i
use this code:

model1<-gam(Clupeidae~s(depth)+s(temperature)+s(salinity),poisson)

the result shown is:

There were 50 or more warnings (use warnings() to see the first 50)

warnings(model1)

Warning messages:
1: In dpois(y, mu, log = TRUE) : non-integer x = 2.079542 Error in
cat(list(...), file, sep, fill, labels, append) :
   argument 2 (type 'list') cannot be handled by 'cat'


what is meaning it?

do i allow use it for continue?

thanks