The high-level language of R is recognized as one of the most powerful and flexible statistical software environments, and is rapidly becoming the standard setting for quantitative analysis, statistics and graphics. R provides free access to unrivalled coverage and cutting-edge applications, enabling the user to apply numerous statistical methods ranging from simple regression ...(展开全部)

In the newly revised Third Edition of The R Book, a team of distinguished teachers and researchers delivers a user-friendly and comprehensive discussion of foundational and advanced topics in the R software language, which is used widely in science, engineering, medicine, economics, and other fields. The book is designed to be used as both a complete text―readable from cover to...(展开全部)

Hugely successful and popular text presenting an extensive and comprehensive guide for all R users The R language is recognized as one of the most powerful and flexible statistical software packages, enabling users to apply many statistical techniques that would be impossible without such software to help implement such large data sets. R has become an essential tool for unders...(展开全部)

'...If you wanted to go on from the end of The Hobbit I think the ring would be your inevitable choice as the link. If then you wanted a large tale, the Ring would at once acquire a capital letter; and the Dark Lord would immediately appear. As he did, unasked, on the hearth at Bag End as soon as I came to that point. So the essential Quest started at once. But I met a lot of t...(展开全部)

R in Action, Third Edition teaches you how to do statistical analysis and data visualization using R and its popular tidyverse packages. In it, you’ll investigate real-world data challenges, including forecasting, data mining, and dynamic report writing. This revised third edition adds new coverage for graphing with ggplot2, along with examples for machine learning topics like ...(展开全部)

R in a Nutshell is the best way to learn R, a powerful open source tool for data visualization and statistical computing -- ideal as a replacement for statistical packages costing thousands of dollars. Practical and easy to read, the book provides a thorough overview of the language, along with a reference to the most commonly used features. You'll quickly discover why R has be...(展开全部)

A comprehensive collection of letters spanning the adult life (1914-1973) of one of the world's most famous storytellers. 'It is not possible even at great length to "pot" The Lord of the Rings in a paragraph or two. It was begun in 1936, and every part has been written many times! the labour has been colossal; and it must stand or fall, practically as it is.' J.R.R. Tolkien ...(展开全部)

A comprehensive collection of letters spanning the adult life (1914-1973) of one of the world's most famous storytellers. 'It is not possible even at great length to "pot" The Lord of the Rings in a paragraph or two. It was begun in 1936, and every part has been written many times! the labour has been colossal; and it must stand or fall, practically as it is.' J.R.R. Tolkien ...(展开全部)

This new book from renowned Tolkien expert John Garth connects the places which inspired Tolkien with their eventual appearances in his work. Organised by theme, Tolkien’s Worlds offers an illustrated biography of one of the world’s best-loved authors, an exploration of the relationship between worlds real and fantastical, and an inspiration for anyone who wants to follow in To...(展开全部)