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D3.js Quick Start Guide

You're reading from   D3.js Quick Start Guide Create amazing, interactive visualizations in the browser with JavaScript

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Product type Paperback
Published in Sep 2018
Publisher Packt
ISBN-13 9781789342383
Length 180 pages
Edition 1st Edition
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Author (1):
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Matthew Huntington Matthew Huntington
Author Profile Icon Matthew Huntington
Matthew Huntington
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Table of Contents (10) Chapters Close

Preface 1. Getting Started with D3.js FREE CHAPTER 2. Using SVG to Create Images Using Code 3. Building an Interactive Scatter Plot 4. Making a Basic Scatter Plot Interactive 5. Creating a Bar Graph Using a Data File 6. Animating SVG Elements to Create an Interactive Pie Chart 7. Using Physics to Create a Force-Directed Graph 8. Mapping 9. Other Books You May Enjoy

Defining GeoJSON

GeoJSON is just JSON data that has specific properties that are assigned specific data types. The following is an example of GeoJSON:

{
    "type": "Feature",
    "geometry": {
        "type": "Point",
        "coordinates": [125.6, 10.1]
    },
    "properties": {
        "name": "Dinagat Islands"
    }
}

In this example, we have one Feature, the geometry of which is a Point with the coordinates [125.6, 10.1]. Its name is Dinagat Islands. Each Feature will follow this general structure. An example, with the type as STRING, is as follows:

{
    "type": STRING,
    "geometry": {
        "type": STRING,
        "coordinates": ARRAY
    },
    "properties": OBJECT
}

We can also have a FeatureCollection, which includes many...

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