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@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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