Comprehensive R Archive Network

CRAN is a network of ftp and web servers around the world that store identical, up-to-date, versions of code and documentation for R. R is ‘GNU S’, a freely available language and environment for statistical computing and graphics which provides a wide variety of statistical and graphical techniques: linear and nonlinear modelling, statistical tests, time series analysis, classification, clustering, etc. Please consult the R project homepage for further information.

CRAN是一个遍布全球的FTP和Web服务器网络，其中存储着R语言代码及其文档的相同且最新的版本。R语言，即‘GNU S’，是一种用于统计计算和图形的免费语言和环境，它提供了丰富的统计和图形技术，包括线性与非线性格式化、统计检验、时间序列分析、分类、聚类等。欲获取更多信息，请访问R项目主页。