[R] datadist() in Design library

[array chip]

Dear Jorge, Yes, with "data=beta.final" in the lrm(), it worked. But I thought one of the reasons for datadist() is to make it unnecessary to specify the data frame in the lrm(). Maybe I am completely wrong here.

Thanks

John

--- On Thu, 7/9/09, Jorge Ivan Velez <jorgeivanvelez at gmail.com> wrote:

> From: Jorge Ivan Velez <jorgeivanvelez at gmail.com>
> Subject: Re: [R] datadist() in Design library
> To: "array chip" <arrayprofile at yahoo.com>
> Cc: "R mailing list" <r-help at r-project.org>
> Date: Thursday, July 9, 2009, 6:55 PM
> Dear John,
> Have you tried it specifying the 'data'
> argument as suggested in lrm help?
> Try this:
>  lrm(Disease ~ gsct +
> apcct + rarct,  data = beta.final, x
> = TRUE,  y = TRUE)
> 
> 
> HTH,
> Jorge
> 
> On Thu, Jul 9, 2009 at 6:46 PM,
> array chip <arrayprofile at yahoo.com>
> wrote:
> 
> 
> 
> 
> Hi I got an error message using datadist() from Design
> package:
> 
> 
> 
> > library(Design,T)
> 
> > dd <- datadist(beta.final)
> 
> > options(datadist="dd")
> 
> > lrm(Disease ~ gsct+apcct+rarct, x=TRUE, y=TRUE)
> 
> Error in eval(expr, envir, enclos) : object
> "Disease" not found
> 
> 
> 
> All variables inclduing response variable
> "Disease" are in the data frame
> "beta.final", why then "Disease" can not
> be found? I thought with datadist(), all variables are
> presented to the model fitting functions. maybe I am wrong?
> 
> 
> 
> 
> 
> thanks
> 
> 
> 
> John
> 
> 
> 
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