Data Manipulation with R pdf epub mobi txt 电子书下载 2024

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Phil Spector

Springer

2008-03-19

164

USD 54.95

Paperback

Use R

9780387747309

图书标签: R 统计数据处理 Statistics R语言数据分析 Programming stats

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发表于2024-12-23

Data Manipulation with R epub 下载 mobi 下载 pdf 下载 txt 电子书下载 2024

Data Manipulation with R pdf epub mobi txt 电子书下载 2024

图书描述

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.

Data Manipulation with R 下载 mobi epub pdf txt 电子书

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Data Manipulation with R pdf epub mobi txt 电子书下载

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用户评价

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这是一本还不错的入门教材，适合刚开始学R，或者学了一段时间发现有些概念不清楚，可以回过头再看一遍，系统整理一下思路。对于中阶段使用者来说，太简单了，可以不看。有评论说记不住，R不用记，书是给你梳理总结更新用的。记不住查一下就好了。久了就记住了

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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。

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读后感

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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...

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