> require("caret")
Loading required package: caret
Loading required package: lattice
Loading required package: ggplot2
Error in loadNamespace(j <- i[[1L]], c(lib.loc, .libPaths()), versionCheck = vI[[j]]) :
there is no package called ‘pbkrtest’
所以我发现缺少"pbkrtest"然后我试图重新安装它.
> install.packages("pbkrtest")
Installing package into ‘C:/Users/ADMIN/Documents/R/win-library/3.2’
(as ‘lib’ is unspecified)
There is a binary version available but the source version is
later:
binary source needs_compilation
pbkrtest 0.4-2 0.4-3 FALSE
installing the source package ‘pbkrtest’
trying URL 'https://rweb.crmda.ku.edu/cran/src/contrib/pbkrtest_0.4- 3.tar.gz'
Content type 'application/x-gzip' length 164415 bytes (160 KB)
downloaded 160 …