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I have tried a lot in stackoverflow for this question, such as update.package, install 'codetools', and some tips in stackoverflow- How should I deal with “package 'xxx' is not available” warning? but it doesn't work. The package seems to be installed, but can't be loaded- 

library(survival) 
## error:package ‘survival’ was built before R 3.0.0: please re-install it
Ben Bolker
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King
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  • It's a recommended package, so it's not available on CRAN but should be pre-installed. You probably have some old packages in your path. Results of `.libPaths()` and `sessionInfo()` please? – Ben Bolker Nov 27 '14 at 03:00
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    Try update.packages(ask=FALSE, checkBuilt = TRUE), ref http://www.r-bloggers.com/automated-re-install-of-packages-for-r-3-0/ –  Nov 27 '14 at 03:17

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@John It's amazing! I had used update.packages before, but it didn't work-just now it works! But there is still an warning - 

package ‘survival’ was built under R version 3.1.2

@Ben Bolker 

sessionInfo()#R version 3.1.1 (2014-07-10)#Platform: i386-w64-mingw32/i386 (32-bit)
#locale: #[1] LC_COLLATE=Chinese (Simplified)_People's Republic of China.936 
#[2] LC_CTYPE=Chinese (Simplified)_People's Republic of China.936   
#[3] LC_MONETARY=Chinese (Simplified)_People's Republic of China.936 
#[4] LC_NUMERIC=C 
#[5] LC_TIME=Chinese (Simplified)_People's Republic of China.936
#attached base packages:#[1] splines   stats     graphics  grDevices
#[5] utils  datasets  methods   base #other attached packages:
#[1] survival_2.37-7#loaded via a namespace (and not attached):#[1] tools_3.1.1
King
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