Hi,
Design isn't strictly an R base package, but maybe someone can explain
the following.
When lrm is called within a function, it can't find the dataset dd:
> library(Design)
> age <- rnorm(30, 50, 10)
> cholesterol <- rnorm(30, 200, 25)
> ch <- cut2(cholesterol, g=5, levels.mean=TRUE)
> fit <- function(ch, age)
+ {
+ d <- data.frame(ch, age)
+ dd <- datadist(d)
+ options(datadist="dd")
+ lrm(ch ~ age, data=d, x=TRUE, y=TRUE)
+ }
> fit(ch, age)
Error in Design(eval(m, sys.parent())) :
dataset dd not found for options(datadist=)
It works outside a function:
> d <- data.frame(ch, age)
> dd <- datadist(d)
> options(datadist="dd")
> l <- lrm(ch ~ age, data=d, x=TRUE, y=TRUE)
Thanks,
Gad
> sessionInfo()
R version 2.6.2 (2008-02-08)
x86_64-pc-linux-gnu
...
attached base packages:
[1] splines stats graphics grDevices utils datasets methods
[8] base
other attached packages:
[1] Design_2.1-1 survival_2.34 Hmisc_3.4-3
loaded via a namespace (and not attached):
[1] cluster_1.11.9 grid_2.6.2 lattice_0.17-4 rcompgen_0.1-17
--
Gad Abraham
Dept. CSSE and NICTA
The University of Melbourne
Parkville 3010, Victoria, Australia
email: [EMAIL PROTECTED]
web: http://www.csse.unimelb.edu.au/~gabraham
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