That was the correct direction: I changed the earler line to "routines <- list(Ccoxfit5a,
..." and the the later to .C(routnines[[1]]) and now it works as desired.
Terry T.
On 02/23/2013 03:09 AM, Duncan Murdoch wrote:
On 13-02-22 2:59 PM, Terry Therneau wrote:
I'm working on registering all the routines in the survival package, per a
request from
R-core. Two questions:
1. In the coxph routine I have this type of structure:
if (survival has 2 columns) routines <- c("coxfit5_a", "coxfit5_b",
"coxfit5_c")
else routines <- c("agfit5_a", "agfit5_b",
"agfit5_c")
.....
.C(routines[1], arg1, etc
I tried replacing "routines" with a vector of native symbol references, but it doesn't
work
Error in .C(routines[1], as.integer(n), as.integer(nvar), as.double(y), :
first argument must be a string (of length 1) or native symbol reference
I imagine routines is a list in this case, so you should be using routines[[1]] to
extract the element, rather than subsetting the list.
Duncan Murdoch
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