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ROS Robotics By Example, Second Edition

ROS Robotics By Example, Second Edition

By : Lentin Joseph, Carol Fairchild, Harman
4.3 (6)
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ROS Robotics By Example, Second Edition

ROS Robotics By Example, Second Edition

4.3 (6)
By: Lentin Joseph, Carol Fairchild, Harman

Overview of this book

ROS is a robust robotics framework that works regardless of hardware architecture or hardware origin. It standardizes most layers of robotics functionality from device drivers to process control and message passing to software package management. But apart from just plain functionality, ROS is a great platform to learn about robotics itself and to simulate, as well as actually build, your first robots. This does not mean that ROS is a platform for students and other beginners; on the contrary, ROS is used all over the robotics industry to implement flying, walking and diving robots, yet implementation is always straightforward, and never dependent on the hardware itself. ROS Robotics has been the standard introduction to ROS for potential professionals and hobbyists alike since the original edition came out; the second edition adds a gradual introduction to all the goodness available with the Kinetic Kame release. By providing you with step-by-step examples including manipulator arms and flying robots, the authors introduce you to the new features. The book is intensely practical, with space given to theory only when absolutely necessary. By the end of this book, you will have hands-on experience on controlling robots with the best possible framework.
Table of Contents (12 chapters)
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11
Index

Features of Xacro

Xacro is the XML macro language for ROS. Xacro provides a set of macro operations to replace some repetitive statements with shorter, concise macros that will expand into full XML statements when processed. Xacro can be used with any XML document, but is most useful with long, complex URDF files. Xacro allows you to create shorter and more readable XML files for the robot URDF. Xacro provides advantages in many different areas:

  • Properties and property blocks: If repeated information is used in a URDF/SDF file, the <property> tag can be used to specify these constant values in a central location. Property blocks are snippets that can contain one or more XML definitions. These are typically parameters that can be changed later. Properties and property blocks are usually declared at the beginning of the file, although this is not required. They can be found anywhere in the XML file at any level. It does not matter whether the property declaration is before or after...

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