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Learning D3.js 5 Mapping

You're reading from   Learning D3.js 5 Mapping Build cutting-edge maps and visualizations with JavaScript

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Product type Paperback
Published in Nov 2017
Publisher
ISBN-13 9781787280175
Length 298 pages
Edition 2nd Edition
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Authors (3):
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Thomas Newton Thomas Newton
Author Profile Icon Thomas Newton
Thomas Newton
Oscar Villarreal Oscar Villarreal
Author Profile Icon Oscar Villarreal
Oscar Villarreal
Lars Verspohl Lars Verspohl
Author Profile Icon Lars Verspohl
Lars Verspohl
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Toc

Table of Contents (13) Chapters Close

Preface 1. Gathering Your Cartography Toolbox FREE CHAPTER 2. Creating Images from Simple Text 3. Producing Graphics from Data - the Foundations of D3 4. Creating a Map 5. Click-Click Boom! Applying Interactivity to Your Map 6. Finding and Working with Geographic Data 7. Testing 8. Drawing with Canvas and D3 9. Mapping with Canvas and D3 10. Adding Interactivity to Your Canvas Map 11. Shaping Maps with Data - Hexbin Maps 12. Publishing Your Visualization with GitHub Pages

Line

The SVG line is one of the simplest in the library. It draws a straight line from
one point to another. The syntax is very straightforward and can be experimented with at: http://localhost:8080/chapter-2/line.html, assuming the HTTP server is running:

<line x1="10" y1="10" x2="100" y2="100" stroke-width="1" 
stroke="red"/>

This will give you the following output:

A description of the element's attributes is as follows:

  • x1 and y1: The starting x and y coordinates
  • x2 and y2: The ending x and y coordinates
  • stroke: This gives the line a red color
  • stroke-width: This denotes the width of the line to be drawn in pixels

The line tag also has the ability to change the style of the end of the line. For example, adding the following would change the image so it has round ends:

stroke-linecap: round; 

As stated...

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