[R] trouble in installing package "matching".

Jp zhu zhujp98 at gmail.com
Fri Sep 30 05:14:36 CEST 2011

I am a new R user. I trying to install a package all Matching but failed.
Here is the error msg.
> install.packages("Matching", dependencies=TRUE) 
Installing package(s) into ‘C:/Users/jzhu/Documents/R/win-library/2.13’
(as ‘lib’ is unspecified)
--- Please select a CRAN mirror for use in this session ---
Warning: unable to access index for repository
Warning: unable to access index for repository
Warning messages:
1: In open.connection(con, "r") :
  unable to connect to 'cran.r-project.org' on port 80.
2: In getDependencies(pkgs, dependencies, available, lib) :
  package ‘Matching’ is not available (for R version 2.13.1)


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