Le premier tome d'une nouvelle saga qui promet d'être aussi addictive que Le Clan des Otori. On retrouve avec un plaisir inégalé l'univers de Lian Hearn, son japon médiéval pétri de magie, son ambiance aussi éthérée que pesante, ses nombreux personnages attachants, ses luttes de pouvoir...
With more than 200 practical recipes, this book helps you perform data analysis with R quickly and efficiently. The R language provides everything you need to do statistical work, but its structure can be difficult to master. This collection of concise, task-oriented recipes makes you productive with R immediately, with solutions ranging from basic tasks to input and output, general statistics, graphics, and linear regression.
Each recipe addresses a specific problem, with a discussion that explains the solution and offers insight into how it works. If you're a beginner, R Cookbookwill help get you started. If you're an experienced data programmer, it will jog your memory and expand your horizons. You'll get the job done faster and learn more about R in the process.
- Create vectors, handle variables, and perform other basic functions
- Input and output data
- Tackle data structures such as matrices, lists, factors, and data frames
- Work with probability, probability distributions, and random variables
- Calculate statistics and confidence intervals, and perform statistical tests
- Create a variety of graphic displays
- Build statistical models with linear regressions and analysis of variance (ANOVA)
- Explore advanced statistical techniques, such as finding clusters in your data
"Wonderfully readable, R Cookbookserves not only as a solutions manual of sorts, but as a truly enjoyable way to explore the R language-one practical example at a time."-Jeffrey Ryan, software consultant and R package author