Why are you trying to extract the values by calling a function with the name of the value? glm objects are stored as a list i.e. str(pAmeir_1)
Hence, you can extract what you need by selecting the values on the list i.e. pAmeir_1$df.null pAmeir_1$null.deviance Cheers Francisco >From: "Guenther, Cameron" <[EMAIL PROTECTED]> >To: <[EMAIL PROTECTED]>, <r-help@stat.math.ethz.ch> >Subject: [R] Glm poisson >Date: Mon, 27 Mar 2006 12:07:04 -0500 > >Hello, >I am using the glm model with a poisson distribution. The model runs >just fine but when I try to get the null deviance for the model of the >null degrees of freedom I get the following errors: > > > null.deviance(pAmeir_1) >Error: couldn't find function "null.deviance" > > > df.null(pAmeir_1) >Error: couldn't find function "df.null" > >When I do: > > > names(pAmeir_1) > [1] "coefficients" "residuals" "fitted.values" > [4] "effects" "R" "rank" > [7] "qr" "family" "linear.predictors" >[10] "deviance" "aic" "null.deviance" >[13] "iter" "weights" "prior.weights" >[16] "df.residual" "df.null" "y" >[19] "converged" "boundary" "model" >[22] "call" "formula" "terms" >[25] "data" "offset" "control" >[28] "method" "contrasts" "xlevels" > >It tells me that the values are there but I can not access them. > >Any comments would be greatly appreciated. > >Thank you > >Cameron Guenther, Ph.D. >Associate Research Scientist >FWC/FWRI, Marine Fisheries Research >100 8th Avenue S.E. >St. Petersburg, FL 33701 >(727)896-8626 Ext. 4305 >[EMAIL PROTECTED] > >______________________________________________ >R-help@stat.math.ethz.ch mailing list >https://stat.ethz.ch/mailman/listinfo/r-help >PLEASE do read the posting guide! >http://www.R-project.org/posting-guide.html ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html