This book presents a wide array of methods applicable for reading data into R, and efficiently manipulating that data. In addition to the built-in functions, a number of readily available packages from CRAN (the Comprehensive R Archive Network) are also covered. All of the methods presented take advantage of the core features of R: vectorization, efficient use of subscripting, and the proper use of the varied functions in R that are provided for common data management tasks. Most experienced R users discover that, especially when working with large data sets, it may be helpful to use other programs, notably databases, in conjunction with R. Accordingly, the use of databases in R is covered in detail, along with methods for extracting data from spreadsheets and datasets created by other programs. Character manipulation, while sometimes overlooked within R, is also covered in detail, allowing problems that are traditionally solved by scripting languages to be carried out entirely within R. For users with experience in other languages, guidelines for the effective use of programming constructs like loops are provided. Since many statistical modeling and graphics functions need their data presented in a data frame, techniques for converting the output of commonly used functions to data frames are provided throughout the book.
具體描述
讀後感
Data Manipulation with R - Summary Notes Jianghao Wang wangjh@lreis.ac.cn Dec. 11, 2012: version 0.1 Reference Spector, P., Data manipulation with R. Use R! 2008, New York: Springer. ix, 152 p. Chapter 1 Data in R Modes and classes The mode function ret...
評分Data Manipulation with R - Summary Notes Jianghao Wang wangjh@lreis.ac.cn Dec. 11, 2012: version 0.1 Reference Spector, P., Data manipulation with R. Use R! 2008, New York: Springer. ix, 152 p. Chapter 1 Data in R Modes and classes The mode function ret...
評分Data Manipulation with R - Summary Notes Jianghao Wang wangjh@lreis.ac.cn Dec. 11, 2012: version 0.1 Reference Spector, P., Data manipulation with R. Use R! 2008, New York: Springer. ix, 152 p. Chapter 1 Data in R Modes and classes The mode function ret...
評分Data Manipulation with R - Summary Notes Jianghao Wang wangjh@lreis.ac.cn Dec. 11, 2012: version 0.1 Reference Spector, P., Data manipulation with R. Use R! 2008, New York: Springer. ix, 152 p. Chapter 1 Data in R Modes and classes The mode function ret...
評分Data Manipulation with R - Summary Notes Jianghao Wang wangjh@lreis.ac.cn Dec. 11, 2012: version 0.1 Reference Spector, P., Data manipulation with R. Use R! 2008, New York: Springer. ix, 152 p. Chapter 1 Data in R Modes and classes The mode function ret...
用戶評價
這是一本還不錯的入門教材，適閤剛開始學R，或者學瞭一段時間發現有些概念不清楚，可以迴過頭再看一遍，係統整理一下思路。對於中階段使用者來說，太簡單瞭，可以不看。有評論說記不住，R不用記，書是給你梳理總結更新用的。記不住查一下就好瞭。久瞭就記住瞭
评分案頭常備書，R的書要麼看精的要麼看專的，此書屬於後者。但是遠遠沒有涵蓋R的data manipulation所有大招小計，名字改為an intro to R data manipulation更準確。前三章也基本是可以不看的，最後三章不錯。
评分看的中文版，裏麵apply函數和reshape包介紹的比較詳細。
评分還行的簡介。不過確實記不住。
评分入門教材，還蠻多細節的
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