"package 'ElemStatLearn' is not available for this version of R

问题：

# install.packages('ElemStatLearn')

# "package 'ElemStatLearn' is not available for this version of R

require(e1071)
install.packages('ElemStatLearn')
require(ElemStatLearn)#package containing the dataset#Loading the data
attach(mixture.example) #is just a simulated mixture data with 200 rows and 2 classes
names(mixture.example)

解决：

#
install.packages(packageurl, repos=NULL, type="source")

# https://cran.r-project.org/src/contrib/Archive/ElemStatLearn/ElemStatLearn_2015.6.26.tar.gzpackageurl <- "https://cran.r-project.org/src/contrib/Archive/ElemStatLearn/ElemStatLearn_2015.6.26.tar.gz"
install.packages(packageurl, repos=NULL, type="source")

完整错误：

Warning message:
"unable to access index for repository https://CRAN.R-project.org/package=ElemStatLearn/src/contrib:无法打开URL'https://CRAN.R-project.org/package=ElemStatLearn/src/contrib/PACKAGES'"
Warning message:
"package 'ElemStatLearn' is not available for this version of RA version of this package for your version of R might be available elsewhere,
see the ideas at
https://cran.r-project.org/doc/manuals/r-patched/R-admin.html#Installing-packages"
Warning message:
"unable to access index for repository https://CRAN.R-project.org/package=ElemStatLearn/bin/windows/contrib/4.1:无法打开URL'https://CRAN.R-project.org/package=ElemStatLearn/bin/windows/contrib/4.1/PACKAGES'"
载入需要的程辑包：ElemStatLearnWarning message in library(package, lib.loc = lib.loc, character.only = TRUE, logical.return = TRUE, :
"不存在叫'ElemStatLearn'这个名字的程辑包"

Error in attach(mixture.example): 找不到对象'mixture.example'
Traceback:1. attach(mixture.example)

The package has been removed from CRAN:
CRAN - Package ElemStatLearn (r-project.org)

You can still install an archived version.

参考：Installing "ElemStatLearn" error

参考：R

参考：package ‘ElemStatLearn’ is not available (for R version 4.0.2)

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“package ‘ElemStatLearn‘ is not available for this version of R

"package 'ElemStatLearn' is not available for this version of R

问题：

解决：

完整错误：

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