Preface

This book explores the JavaScript library, D3.js, and its ability to help us create maps and amazing visualizations. You will no longer be confined to third-party tools in order to get a nice looking map. With D3.js, you can build your own maps and customize them as you please. This book will go from the basics of SVG and JavaScript to data trimming and modification with TopoJSON. Using D3.js to glue together these three key ingredients, we will create very attractive maps that will cover many common use cases for maps, such as choropleths, data overlays on maps, and interactivity.