error message obtained when plotting survival curves (error not previously obtained)
Hello Thomas, I had been using both survival & design packages. I have just tested both packages and can report that the error only appears after loading Design. If I just run survival there is no error. regards Bob
At 06:08 PM 1/04/2009, Thomas Lumley wrote:
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
tlumley at u.washington.edu University of Washington, Seattle