Please follow posting guide and provide a simple completely self-contained
example showing the error. Then I'll take a look.
Frank
Sander wrote:>
> Dear all,
>
> I have performed a simple logistic regression using the lrm function from
> the Design library. Now I want to plot the summary, or make a nomogram. I
> keep getting a datadist error: options(datadist= m.full ) not created with
> datadist.
> I have tried to specify datadist beforhand (although I don't know why
it
> should be done):
>
> ddist<-datadist(d) ##where d is my dataset
> options(datadist="ddist")
>
> This doesn't work. It only works when I convert my original dataset to
> datadistL
>
> d<-datadist(d)
> options(datadist="d")
>
> After this I can perform all the diagnostics and make a nomogram. However,
> my dataset 'd' is now completely useless, and I have to run the
code to
> read
> in my data again and again to perform actions that are not related to
> datadist. Please let me know what I am overlooking.
>
> This is some more of the code:
>
> m.full<-lrm(event~pa+pb+pc, x=TRUE, y=TRUE, data=d)
> stats<-m.full$stats
> hshrink<-(stats["Model
L.R."]-stats["d.f."])/stats["Model L.R."]
> hshrink
> ddist<-datadist(d)
> options(datadist="ddist")
>
> par(mfrow=c(2,2))
> plot(m.fulldesign) ##Error I described
> f.sum<-summary(m.fulldesign) ##Error I described
> nomogram(m.full) ##Error I described
>
>
> Best regards,
> Sander van Kuijk
>
> [[alternative HTML version deleted]]
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide
> http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>
-----
Frank Harrell
Department of Biostatistics, Vanderbilt University
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