Getting started with r

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  • 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.

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  • Hobby grade servo motors can be used with success in several different robotic applications. They have a very simple electrical interface and are available in a great assortment of specifications and prices. Usually one can get started with a very cheap one. This paper will demonstrate how to control one of these servos using a PC and a Microchip PIC microcontroller.

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  • This practical guide provides more than 150 recipes to help you generate high-quality graphs quickly, without having to comb through all the details of R’s graphing systems. Each recipe tackles a specific problem with a solution you can apply to your own project, and includes a discussion of how and why the recipe works. Most of the recipes use the ggplot2 package, a powerful and flexible way to make graphs in R. If you have a basic understanding of the R language, you’re ready to get started....

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  • If you’re an experienced programmer interested in crunching data, this book will get you started with machine learning—a toolkit of algorithms that enables computers to train themselves to automate useful tasks. Authors Drew Conway and John Myles White help you understand machine learning and statistics tools through a series of hands-on case studies, instead of a traditional math-heavy presentation.

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  • www.telc.net ce A2·B1 mon Eur o pe r a me an F w or ko f Refer e om n C .No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, electronic, photocopying, recording or otherwise, without prior permission of the publisher. All violations will be prosecuted. All rights reserved © 2012 by telc GmbH, Frankfurt am Main Printed in Germany Order Number: 5160-T00-010101 .

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  • @implementation Circle -(float )radius { return radius ; } -(void )radius :(float )r { radius = r ; } @end Don't use "get" in the name of your accessors. By convention, methods whose names start with "get" take an address into which data will be copied. If you are using reference counting, there are more design patterns you should follow when writing accessors. These are discussed in Section 1.12.2. 1.3.5.7 Message search paths When you send an object a message (call one of its methods), the code that actually runs is determined by a search performed at runtime. The dispatch...

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