我正在尝试下载zoo包,以便使用以下命令处理时间序列:
install.packages("zoo")但我得到了以下信息:
--- Please select a CRAN mirror for use in this session ---
Warning: unable to access index for repository http://cran.cnr.Berkeley.edu/bin/windows/contrib/2.12
Warning: unable to access index for repository http://www.stats.ox.ac.uk/pub/RWin/bin/windows/contrib/2.12
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 ‘zoo’ is not available 我尝试了几个不同的镜像,但我总是得到相同的错误...是zoo在大多数镜像中都不可用,还是出了什么问题?
https://stackoverflow.com/questions/6049342
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