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当我尝试加载预测其打包trows我没有RCPP包,它试图通过手动我碰到下面的错误安装RCPP包取决于无法安装RCPP包时装载预测
错误
install.packages( “RCPP”)
Installing package into ‘C:/Users/~~~’
(as ‘lib’ is unspecified)
There is a binary version available but the source version is later:
binary source needs_compilation
Rcpp 0.12.10 0.12.11 TRUE
Binaries will be installed
trying URL 'https://cran.rstudio.com/bin/windows/contrib/3.4/Rcpp_0.12.10.zip'
Warning in install.packages :
cannot open URL 'https://cran.rstudio.com/bin/windows/contrib/3.4/Rcpp_0.12.10.zip': HTTP status was '404 Not Found'
Error in download.file(url, destfile, method, mode = "wb", ...) :
cannot open URL 'https://cran.rstudio.com/bin/windows/contrib/3.4/Rcpp_0.12.10.zip'
Warning in install.packages :
download of package ‘Rcpp’ failed