R-swirl无法正确载入问题
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Coursera@Getting and Cleaning Data公开课要求使用swirl包，安装时出现问题
> library(swirl)Error in library(swirl) : there is no package called 'swirl'官方给出的在我电脑上然并卵的解决方案
- Did you install swirl with install.packages(“swirl”)? If so, then something went wrong with installation. There are a few reasons this might occur. 是否安装swirl包，如果没有请正确安装；
- Do you have R version 3.0.2 or later? This is required for the most recent version of swirl. 确保R版本在3.0.2以上；
- Are you behind a firewall or proxy server at work? If you have access to a personal computer, that’s often the easiest fix. 关闭防火墙，也可能是网络代理问题，或者如校园网，公司内网等可能造成问题；
- Do you have full permissions on your computer? Again, using a personal computer may be your best bet. 电脑权限问题；
最后使用解决方案：
- 重新安装，改变dependencies变量， 如
install.packages("swirl",dependencies = T)
- 重新安装，改变dependencies变量， 如
0 0
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