Data Manipulation with R - Second EditionКНИГИ » ОС И БД
Название: Data Manipulation with R - Second Edition Автор: Kishor Kumar Das and Jaynal Abedin Издательство: Packt Publishing Год: 2015 Формат: PDF Размер: 1 Мб Язык: английский / English
This book starts with the installation of R and how to go about using R and its libraries. We then discuss the mode of R objects and its classes and then highlight different R data types with their basic operations.
The primary focus on group-wise data manipulation with the split-apply-combine strategy has been explained with specific examples. The book also contains coverage of some specific libraries such as lubridate, reshape2, plyr, dplyr, stringr, and sqldf. You will not only learn about group-wise data manipulation, but also learn how to efficiently handle date, string, and factor variables along with different layouts of datasets using the reshape2 package.
By the end of this book, you will have learned about text manipulation using stringr, how to extract data from twitter using twitteR library, how to clean raw data, and how to structure your raw data for data mining.
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Data Manipulation with R - Second Edition 
