On Wed, 1 Apr 2009, Bob Green wrote:
Hello,
I now receive an error message when obtaining a survival plot, which was not
previously received with the same code. I recently updated all my packages. It
does not seem to be a peculiarity of my data as I receive the error using data
available in R. A plot is produced but I am uncertain regarding the error
message.
library(surv2sample)
data(gastric)
fit <- survfit(Surv(time, event) ~ treatment, data = gastric)
Error in get(x, envir = ns, inherits = FALSE) :
variable "survfit.km" was not found
#Default plot:
plot(fit)
You don't show what packages you have loaded. My guess would be that you are
calling Design::survfit rather than survival::survfit, and the problem is due
to the incompatibility between the most recent versions of Design and survival.
Frank Harrell and the folks at Vanderbilt are working on a new version of
Design.
-thomas
Thomas Lumley Assoc. Professor, Biostatistics
tlum...@u.washington.edu University of Washington, Seattle
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