Hello,
Not knowing which system you have, here is a way that usually works.
1. If you are using an IDE sych as RStudio or RGui, save your work and
exit. This is because when the packages' namepaces are loaded, the
shared libs, if they exist, are blocked,
2. Open a terminal window
3. Run
R -q -e "install.packages(c('lifecycle', 'flexsurv'))"
The packages should now be installed.
Hope this helps,
Rui Barradas
Às 13:53 de 01/10/2022, Shah Alam escreveu:
Dear All,
I am analyzing trial data for survival. During the loading of the R package
"flexsurv", the following error message appeared.
"Loading required package: survival
Error: package or namespace load failed for ‘flexsurv’ in loadNamespace(j
<- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]):
there is no package called ‘lifecycle’
Despite installing lifecycle package, loading lifecycle package results in
the following error message:
Error in library(lifecycle) : there is no package called ‘lifecycle’
Moreover, the flexsurvreg function in the flexsurv library also produces an
error:
Error in flexsurvreg(Surv(Time, Event) ~ 1, anc = NULL, data = data1, :
could not find function "flexsurvreg"
Several times I have installed and uninstalled packages, re-started R, but
the error persists.
Could anyone help me with the flexsurv package, why is it not working?
Best regards,
Shah
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