今天在尝试安装这几个包时
source("http://bioconductor.org/biocLite.R")
biocLite("affy")
biocLite("affyPLM")
biocLite("RColorBrewer")
biocLite("impute")
biocLite("lipute")
biocLite("limma")
biocLite("pheatmap")
biocLite("ggplot2")
发现提示已安装，但有几个不能使用，其中一个错误代码如下

biocLite("pheatmap")
BioC_mirror: https://bioconductor.org
Using Bioconductor 3.7 (BiocInstaller 1.30.0), R 3.5.1 (2018-07-02).
Installing package(s) ‘pheatmap’
trying URL 'https://mirrors.ustc.edu.cn/CRAN/bin/windows/contrib/3.5/pheatmap_1.0.10.zip'
Content type 'application/zip' length 75403 bytes (73 K?
downloaded 73 KB

package ‘pheatmap’ successfully unpacked and MD5 sums checked

The downloaded binary packages are in
C:\Users\zhangying\AppData\Local\Temp\RtmpiYUC1k\downloaded_packages
installation path not writeable, unable to update packages: foreign, lattice, MASS, Matrix,
mgcv, survival
因此查看安装路径，发现他们与其他可用的包不同，他们被安装在了另一个路径上，不知道为什么在不选择的情况下会有这两种安装路径。

XLConnectJars xopen "xopen" XVector "XVector" zip "zip" zlibbioc "zlibbioc" zoo "zoo" base "base" boot "boot" class "class" cluster "cluster" codetools "codetools" compiler "compiler" datasets "datasets" foreign "foreign" graphics "graphics" grDevices "grDevices" grid "grid" KernSmooth "KernSmooth" lattice "lattice" MASS "MASS" Matrix "Matrix" methods "methods" mgcv "mgcv" nlme "nlme" nnet "nnet" parallel "parallel" rpart "rpart" spatial "spatial" splines "splines" stats "stats" stats4 "stats4" survival "survival" tcltk "tcltk" tools "tools" 这是截选部分，
按网友的提示将这几个包卸载然后重新指定路径安装也不可以，出现如下提示
installed.packages(c("Matrix", Package LibPath License_is_FOSS 请问现在该如何解决安装包不能用的问题，并且以后也可以避免此类问题的产生。 "XLConnectJars" "C:/Users/zhangying/Documents/R/win-library/3.5"
"C:/Users/zhangying/Documents/R/win-library/3.5"
"C:/Users/zhangying/Documents/R/win-library/3.5"
"C:/Users/zhangying/Documents/R/win-library/3.5"
"C:/Users/zhangying/Documents/R/win-library/3.5"
"C:/Users/zhangying/Documents/R/win-library/3.5"
"C:/Program Files/R/R/library"

"C:/Program Files/R/R/library"

"C:/Program Files/R/R/library"

"C:/Program Files/R/R/library"

"C:/Program Files/R/R/library"

"C:/Program Files/R/R/library"

"C:/Program Files/R/R/library"

"C:/Program Files/R/R/library"

"C:/Program Files/R/R/library"

"C:/Program Files/R/R/library"

"C:/Program Files/R/R/library"

"C:/Program Files/R/R/library"

"C:/Program Files/R/R/library"

"C:/Program Files/R/R/library"

"C:/Program Files/R/R/library"

"C:/Program Files/R/R/library"

"C:/Program Files/R/R/library"

"C:/Program Files/R/R/library"

"C:/Program Files/R/R/library"

"C:/Program Files/R/R/library"

"C:/Program Files/R/R/library"

"C:/Program Files/R/R/library"

"C:/Program Files/R/R/library"

"C:/Program Files/R/R/library"

"C:/Program Files/R/R/library"

"C:/Program Files/R/R/library"

"C:/Program Files/R/R/library"

"C:/Program Files/R/R/library"

"mgcv", "survival","foreign", "lattice", "MASS" ), lib = "C:/Users/zhangying/Documents/R/win-library/3.5")
Version Priority Depends Imports LinkingTo Suggests Enhances License
License_restricts_use OS_type Archs MD5sum NeedsCompilation Built

谢谢！??