发帖
雷达卡
eBook free download
Data Manipulation with R, 2nd Edition.pdf
(3.83 MB)
Book Details
- Paperback: 161 pages
- Publisher: Packt Publishing - ebooks Account; 2 edition (March 31, 2015)
- Language: English
- ISBN-10: 1785288814
- ISBN-13: 978-1785288814
- Product Dimensions: 7.5 x 0.3 x 9.2 inches
- Shipping Weight: 10.9 ounces (View shipping rates and policies)
- Average Customer Review: 5.0 out of 5 stars See all reviews(2 customer reviews)
- Amazon Best Sellers Rank: #825,214 in Books (See Top 100 in Books)
Book Description
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.
Book Details
京公网安备 11010802022788号
