I have been trying to install the ggplot2 package in R and this is the warning I have been getting:
Error in read.dcf(file.path(pkgname, "DESCRIPTION"), c("Package", "Type")) : cannot open the connection
In addition: Warning messages:
1: In download.file(url, destfile, method, mode = "wb", ...) : downloaded length 1040720 != reported length 1152839
2: In unzip(zipname, exdir = dest) : error 1 in extracting from zip file
3: In read.dcf(file.path(pkgname, "DESCRIPTION"), c("Package", "Type")) : cannot open compressed file 'plyr/DESCRIPTION', probable reason 'No such file or directory'
It might be helpful to note that I am using the version 3.1.1. Could you please help me understand what went wrong and how I could resolve this?
Thank you in advance.
From the comments we discovered that somehow your repos
option had been set to a bad value.
install.packages
has an argument called repos
that can be used to specify where to find the package that you'd like to install. If you specify a valid value, it should just work. eg you shouldn't get the error if you do this: install.packages("ggplot2", repos="http://cran.us.r-project.org")
If you do not provide a value, it will look at the repos
option. See getOption("repos")
to see what is set. In your case it was
CRAN CRANextra
"freestatistics.org/cran" "stats.ox.ac.uk/pub/RWin"
neither of which are valid URLs.
You can change the value of the repos
option like this
options(repos=c(CRAN="@CRAN@",
CRANextra="http://www.stats.ox.ac.uk/pub/RWin"))
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.