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Expert Data Visualization

You're reading from   Expert Data Visualization Advanced information visualization with D3.js 4.x

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Product type Paperback
Published in Apr 2017
Publisher Packt
ISBN-13 9781786463494
Length 394 pages
Edition 1st Edition
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Author (1):
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Jos Dirksen Jos Dirksen
Author Profile Icon Jos Dirksen
Jos Dirksen
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Table of Contents (10) Chapters Close

Preface 1. Getting Started with D3 2. Basic Charts and Shapes FREE CHAPTER 3. Working with Hierarchical Data 4. Visualizing Graphs 5. Working with Geo Data 6. Visualizing Streaming Data 7. Voronoi Diagrams and Heatmaps 8. Custom Shapes and Paths and Using a Brush Selection 9. ES6, TypeScript, and External D3.js Libraries

Exporting visualizations

When we create a visualization and we want to export it, we can use two different approaches. We can export it as a bitmap image (for example, PNG) or we can export it as a vector image (SVG format). In this section, we'll look at both approaches.

Exporting visualizations as PNG

To export an SVG element as a PNG, we need to take a couple of steps. Let's first get one of our visualizations that we want to export. We'll work with one of the geographic examples from Chapter 5, Working with Geo Data (D05-01.html):

To export this map, we'll take the following steps:

  1. Create a separate CSS for the styles we want to apply.
  2. Convert the SVG element to a string.
  3. Use the canvas to get a PNG file.
  4. Save the content from the canvas...
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