Store
25 Recipes for Getting Started with R
R is a powerful tool for statistics and graphics, but getting started with this language can be frustrating. This short, concise book provides beginners with a selection of how-to recipes to solve simple problems with R. Each solution gives you just what you need to know to use R for basic statistics, graphics, and regression. You'll find recipes on reading data files, creating data frames, computing basic statistics, testing means and correlations, creating a scatter plot, performing simple linear regression, and many more. These solutions were selected from O'Reilly's R Cookbook , which contains more than 200 recipes for R that you'll find useful once you move beyond the basics.
Related Products
Selected Papers from the 4th Annual Heat Transfer, Fluid Dynamics and Thermodynamics (HEFAT) Conference 2005
The 4th Annual Heat Transfer, Fluid Dynamics and Thermodynamics Conference (HEFAT) took place in Cairo in 2005. The objective of this conference is to bring together researchers engaged in the application of experimental, analytical or computational heat and mass transfer, fluid flow, and thermophysical properties. This e-book is composed of a selection of presented papers which are concerned with new and valued developments in the computer based modeling of heat and fluid flow problems.
Vision & Voice
This is the eBook version of the printed book. What if your image could only communicate one thing: one major idea, overarching theme, or driving emotion? If you identified this, you’d discover your vision for that image—the internal, invisible guiding principle that directs both how you capture the image and how you develop it in the digital darkroom. Without vision, you likely find yourself flailing both behind the camera and in front of the computer—indiscriminately shooting and arbitrarily moving sliders in hopes of stumbling upon something great every once in a while. With vision, you bring direction and intention to both the creation and development of all your images. Vision & Voice: Refining Your Vision in Adobe Photoshop Lightroom is about identifying your vision and using Lightroom’s Develop module to give voice—that outward expression—to your vision. Photographer David duChemin begins with the fundamentals of a vision-driven workflow, where he discusses everything from vision and style, to the importance of mood and color, to the crucial role of histograms and of getting the best possible digital negative to work with. After demonstrating how the Develop module’s tools affect the aesthetics of your image, duChemin then offers a straightforward approach to developing your images in accordance with your own personal vision: identify your intention, minimize the distractions, maximize the mood, and draw the viewer’s eye—all while leaving room for play and serendipity. Finally, duChemin applies this approach to 20 of his photographs as he takes you into his own digital darkroom and, beginning with the original RAW file, works step by step through the development of the final image.
Linear Programming and Network Flows
Linear Programming and Network Flows, now in its third edition, addresses the problem of minimizing or maximizing a linear function in the presence of linear equality or inequility constraints. This book: * Provides methods for modeling complex problems via effective algorithms on modern computers. * Presents the general theory and characteristics of optimization problems, along with effective solution algorithms. * Explores linear programming (LP) and network flows, employing polynomial-time algorithms and various specializations of the simplex method.
