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从R包的使用者晋升为R包的开发者,从本书开始。 本书由R社区极有影响力的开发者,ggplot2、plyr等诸多知名R包开发者Hadley Wickham执笔,展示R包开发哲学。书中详细介绍了如何将可重用的R函数、示例数据以及文档一起打包,以便与他人分享代码、节省开发时间、组织数据分析,尽可能让工作自动化。 ?学习R包极有用的组件,包括使用指南和单元 ?利用devtools自动执行任务 ?掌握良好编码风格的技巧,比如如何把函数组织成文件 ?使用devtools简化开发流程 ?发现提交包到CRAN的途径
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Product Details 基本信息 ISBN-13 书号 9781032074504 Author 作者 Hadley Roger Format 版本 精装 Pages Number 页数 250页 Publisher 出版社 Routledge Publication Date 出版日期 2021-11-08 Product Dimensions 商品尺寸 216 x 138 mm (5.5 x 8.5) Language 语种 其它(含多语) Book Contents 内容简介 Voluntary work is sometimes praised, sometimes criticised, but was seldom the subject of objective evaluation. Given the importance of the voluntary sector in the social services at the time, the lack of systematic research into its performance was cause for concern. Originally published in 1975, the particular value of this study was twofold: first it provided a detailed and vivid picture of the work of one section of the volunteer movement – young volunteers working with the elderly; second it examined the wider issue of how voluntary work can be evaluated. The particular volunteers studied were organise
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Product Details 基本信息 ISBN-13 书号 9789401167093 Author 作者 N.H. Hadley Format 版本 平装-胶订 Pages Number 页数 145页 Publisher 出版社 Springer Netherlands Publication Date 出版日期 2012-02-13 Product Dimensions 商品尺寸 9 x 6 x 0.3 cm Shipping Weight 商品重量 520g Language 语种 英语 Book Contents 内容简介 The scene is Britain in the late 40’s and early 50’s. More specifically, the location is the newly formed Psychology Depart? ment of the University of London Institute of Psychiatry, Mauds? ley Hospital. Hans J. Eysenck, then University Reader in Psych? ology, had an ambitious and bold plan. unheard of for those days, which he was determined to bring to fruition come what may. First, personality was to be mapped out in terms of a small number of operationally defined, measurable dimensions. Next, these di? mensions would be related experimentally to their as yet to be ident
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