The most important object in a GeoJSON feature is the geometry object. It contains two properties: type and coordinates. The coordinates array is a collection of positions, which are [longitude, latitude] pairs (in this order). The specific structure of the coordinates array depends on the type of the shape.

Learn D3.js
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Learn D3.js
By:
Overview of this book
This book is a practical hands-on introduction to D3 (Data-driven Documents): the most popular open-source JavaScript library for creating interactive web-based data visualizations. Based entirely on open web standards, D3 provides an integrated collection of tools for efficiently binding data to graphical elements. If you have basic knowledge of HTML, CSS and JavaScript you can use D3.js to create beautiful interactive web-based data visualizations.
D3 is not a charting library. It doesn’t contain any pre-defined chart types, but can be used to create whatever visual representations of data you can imagine. The goal of this book is to introduce D3 and provide a learning path so that you obtain a solid understanding of its fundamental concepts, learn to use most of its modules and functions, and gain enough experience to create your own D3 visualizations. You will learn how to create bar, line, pie and scatter charts, trees, dendograms, treemaps, circle packs, chord/ribbon diagrams, sankey diagrams, animated network diagrams, and maps using different geographical projections. Fundamental concepts are explained in each chapter and then applied to a larger example in step-by-step tutorials, complete with full code, from hundreds of examples you can download and run.
This book covers D3 version 5 and is based on ES2015 JavaScript.
Table of Contents (13 chapters)
Preface
Introduction
Technical Fundamentals
Quick Start
Data Binding
Manipulating Data and Formatting
Scales, Axes, and Colors
Shape and Layout Generators
Animation and Interactivity
Visualizing Hierarchical Data
Visualizing Flows and Networks
Visualizing Geographical Data
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