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R is a language and environment for statistical computing and graphics. It is a GNU project which is similar to the S language and environment which was developed at Bell Laboratories (formerly AT&T, now Lucent Technologies) by John Chambers and colleagues. R can be considered as a different implementation of S. There are some important differences, but much code written for S runs unaltered under R. R provides a wide variety of statistical (linear and nonlinear modelling, classical statistical tests, time-series analysis, classification, clustering, …) and graphical techniques, and is highly extensible. The S language is often the vehicle of choice for research in statistical methodology, and R provides an Open Source route to participation in that activity. One of R’s strengths is the ease with which well-designed publication-quality plots can be produced, including mathematical symbols and formulae where needed. Great care has been taken over the defaults for the minor design choices in graphics, but the user retains full control. R is available as Free Software under the terms of the Free Software Foundation’s GNU General Public License in source code form. It compiles and runs on a wide variety of UNIX platforms and similar systems (including FreeBSD and Linux), Windows and MacOS. R是用于统计分析、绘图的语言和操作环境。R是属于GNU系统的一个自由、免费、源代码开放的软件，它是一个用于统计计算和统计制图的优秀工具。 回国后发现R在国内应用不是十分普遍，而且相关资源有些紧缺。故特意把上学时老师的课件上传上来分享， 也同时在网上备份。希望能有用！ ComputingLecture是实际上机操作的课件； ConceptualLecture是理论知识课件。 R可以上网免费下载的。 http://d.pcs.baidu.com/thumbnail ... amp;amp;quality=100  QQ图片20151008152708.png  QQ图片20151008152958.png |
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清风旭岚2楼
2015-10-03 11:02
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五星好评 顶一下，感谢分享！
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