Book Image

Expert Data Visualization

By : Jos Dirksen
Book Image

Expert Data Visualization

By: Jos Dirksen

Overview of this book

Do you want to make sense of your data? Do you want to create interactive charts, data trees, info-graphics, geospatial charts, and maps efficiently? This book is your ideal choice to master interactive data visualization with D3.js V4. The book includes a number of extensive examples that to help you hone your skills with data visualization. Throughout nine chapters these examples will help you acquire a clear practical understanding of the various techniques, tools and functionality provided by D3.js. You will first setup your D3.JS development environment and learn the basic patterns needed to visualize your data. After that you will learn techniques to optimize different processes such as working with selections; animating data transitions; creating graps and charts, integrating external resources (static as well as streaming); visualizing information on maps; working with colors and scales; utilizing the different D3.js APIs; and much more. The book will also guide you through creating custom graphs and visualizations, and show you how to go from the raw data to beautiful visualizations. The extensive examples will include working with complex and realtime data streams, such as seismic data, geospatial data, scientific data, and more. Towards the end of the book, you will learn to add more functionality on top of D3.js by using it with other external libraries and integrating it with Ecmascript 6 and Typescript
Table of Contents (10 chapters)

Visualizing Streaming Data

In the previous chapters, we've discussed most of the standard visualizations and components provided by D3. In this chapter, we're going to look at a specific implementation where we visualize streaming data, using a number of the building blocks we've seen in the previous chapters.

In this chapter, we're going to create the following visualizations:

  • We're going to start very simply by just creating a line graph which is fed by mouse data. This data represents the streaming data that we want to visualize. We'll use transitions to animate the line, drawn through the randomly created values, from right to left.
  • In the second example, we're going to connect to a WebSocket which provides us with ECG and respiratory data. Whenever the WebSocket pushes an element to our visualization, we'll update the drawn lines.
  • In the previous chapters, we've...