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Data Visualization with D3 and AngularJS

You're reading from   Data Visualization with D3 and AngularJS Build dynamic and interactive visualizations from real-world data with D3 on AngularJS

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Product type Paperback
Published in Apr 2015
Publisher
ISBN-13 9781784398484
Length 278 pages
Edition 1st Edition
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Authors (2):
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Erik Hanchett Erik Hanchett
Author Profile Icon Erik Hanchett
Erik Hanchett
Christoph Körner Christoph Körner
Author Profile Icon Christoph Körner
Christoph Körner
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Table of Contents (11) Chapters Close

Preface 1. The Magic of SVG, D3.js, and AngularJS FREE CHAPTER 2. Getting Started with D3.js 3. Manipulating Data 4. Building a Chart Directive 5. Loading and Parsing Data 6. Drawing Curves and Shapes 7. Controlling Transitions and Animations 8. Bringing the Chart to Life with Interactions 9. Building a Real-time Visualization to Monitor Server Logs Index

Realistic animations with easing


Until now, we animated all attribute changes with the same time step size. However, all physical realistic animations are accelerated or decelerated; therefore, the animation over time is not linear anymore. If we want to create plausible and realistic animations, we have to adapt the linear step size with a nonlinear easing function.

Easing functions describe the change of a value over time, where value is the property that we want to animate. Let's imagine the transition of a ball from position 0 (left-hand side) to position 1 (right-hand side), the ball moves from left to right. If the ball moves with a constant speed from left to right, we call it a linear transition (or linear easing).

We can also visualize this. Let's assume that the whole animation takes 1 second and every 0.2 seconds we take a picture of the ball in the scene. We can see that the position changes linearly with a step size of 0.2 because of the constant speed. We can see this linear...

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