Book Image

OpenStreetMap

Book Image

OpenStreetMap

Overview of this book

Imagine being able to create accurate maps that look how you want them to, and use them on the Web or in print, for free. OpenStreetMap allows exactly that, with no restrictions on how or where you use your maps. OpenStreetMap is perfect for businesses that want to include maps on their website or in publications without paying high fees. With this book in hand you have the power to make, alter, and use this geographical data in a collaborative way from anywhere on the Earth.OpenStreetMap was started because most maps you think of as free actually have legal or technical restrictions on their use, holding back people from using them in creative, productive, or unexpected ways. This book will allow you to take control of your own maps and use them smoothly. This book introduces the reader to the OpenStreetMap project and shows you how to participate in the project, and make use of the data it provides. No prior knowledge of the project is assumed, and technical details are kept to a minimum.In this book, you'll learn how easy it is to add your neighborhood to OpenStreetMap using inexpensive GPS equipment, or even no GPS at all. You'll find out how to communicate with other mappers working in the same area, and where to find more information about how to map the world around you.Once you have your area mapped, you'll learn how to turn this information into maps, whether for use in print or online, large or small, and with the details you want shown. The book describes several rendering methods, each suited to different types of map, and takes you through a tutorial on each one.
Table of Contents (17 chapters)
OpenStreetMap
Credits
About the Author
About the Reviewers
Preface
4
How OpenStreetMap Records Geographical Features
Index

Finding unsurveyed areas with the NoName layer


The NoName layer is a complete rendering of OpenStreetMap designed to highlight the urban areas that may need attention. To view the NoName layer, open the layer chooser in the map view on openstreetmap.org and choose NoName from the list. In NoName, any way tagged as a road but without a corresponding name=* tag is highlighted in red, as seen in the following image. The NoName layer was created to show areas where streets had been traced from aerial imagery, but no follow-up survey had been done to collect the street names.

Large numbers of adjacent streets highlighted in the NoName layer probably means that the area needs surveying on the ground, to collect the street names and other points of interest. However, a road or street not having a name in OpenStreetMap isn't necessarily an error: The street may not actually have a name, or at least not one that can be identified by surveying it. You shouldn't tag a road with a blank name or some...