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.
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读后感
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...
评分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...
评分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...
评分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...
评分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...
用户评价
看的中文版，里面apply函数和reshape包介绍的比较详细。
评分适合对R有一定了解的人长姿势。
评分看的中文版，里面apply函数和reshape包介绍的比较详细。
评分案头常备书，R的书要么看精的要么看专的，此书属于后者。但是远远没有涵盖R的data manipulation所有大招小计，名字改为an intro to R data manipulation更准确。前三章也基本是可以不看的，最后三章不错。
评分还行的简介。不过确实记不住。
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