R-语言介绍.pptVIP

R软件：免费的,志愿者管理的软件。 其编程语言与S-plus所基于的S语言一样， 编程方便，语言灵活，图形功能强大 有不断加入的各个方向统计学家编写的统计软件包。也可以自己加入自己算法的软件包. 从网上可以不断更新和增加有关的软件包、数据和程序。可以使用其他软件编制的程序。 这是发展最快的软件，受到世界上统计师生的欢迎。是用户量增加最快的统计软件。 对于一般非统计工作者来说，主要问题是它没有“傻瓜化”。但学起来很快. R免费 R 资源公开(不是黑盒子,也不是吝啬鬼) R可以在UNIX, Windows和Macintosh运行. R 有优秀的内在帮助系统. R有优秀的画图功能 学生能够轻松地转到商业支持的 S-Plus程序(如果需要使用商业软件) R语言有一个强大的,容易学习的语法,有许多内在的统计函数. 通过用户自编程序, R语言很容易延伸和扩大. 它就是这样成长的. R 是计算机编程语言. 类似于UNIX语言, Pascal,Gauss语言等. 对于熟练的编程者, 它将觉得该语言比其他语言更熟悉. 而对计算机初学者, 学习R语言使得学习下一步的其他编程不那么困难. 那些傻瓜软件(SAS,SPSS等)语言的语法则完全不同. R first appeared in 1996, when the statistics professors Robert Gentleman, left, and Ross Ihaka released the code as a free software package. “R has really become the second language for people coming out of grad school now, and there’s an amazing amount of code being written for it,” said Max Kuhn, associate director of nonclinical statistics at Pfizer. “You can look on the SAS message boards and see there is a proportional downturn in traffic.” “The great beauty of R is that you can modify it to do all sorts of things,” said Hal Varian, chief economist at Google. “And you have a lot of prepackaged stuff that’s already available, so you’re standing on the shoulders of giants.” R You Ready for R? /2009/01/08/r-you-ready-for-r/ January 8, 2009 Statistics professor Robert Gentleman who helped developed the R programming language. R的缺点 不如S-Plus在编辑输出的画图那样好 没有商业支持 (但有网上支持) 需要编程, 不傻瓜. S语言在1980年代后期在ATT实验室开发. R 项目由Auckland 大学统计系的Robert Gentleman和Ross Ihaka于1996年开始的. 它很快得到广泛用户的欢迎. 目前它是由R核心发展团队维持;它是一个由志愿者组成的工作努力的国际团队 The legend of R R started in the early 1990’s as a project by Ross Ihaka and Robert Gentleman at the University of Auckland, New Zealand, intended to provide a statistical environment in their teaching lab. The lab had Macintosh computers, for which no suitable commercial environment was available. R’s Parents(1) The S language S: an interactive environment for data analysis developed at Bell Laboratories since 1976 Exclusively licensed