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Learn Chart.js

You're reading from   Learn Chart.js Create interactive visualizations for the Web with Chart.js 2

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Product type Paperback
Published in Feb 2019
Publisher
ISBN-13 9781789342482
Length 284 pages
Edition 1st Edition
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Author (1):
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Helder da Rocha Helder da Rocha
Author Profile Icon Helder da Rocha
Helder da Rocha
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Table of Contents (9) Chapters Close

Preface 1. Introduction FREE CHAPTER 2. Technology Fundamentals 3. Chart.js - Quick Start 4. Creating Charts 5. Scales and Grid Configuration 6. Configuring Styles and Interactivity 7. Advanced Chart.js 8. Other Books You May Enjoy

Cartesian axes, ticks, and grid lines


There are five chart types that use Cartesian grids: bar, horizontalBar, line, scatter, and bubble. Every chart has two scales, one for each perpendicular axis. Each scale can be of four types:

  • type:'linear': A numeric scale that can be used to compare values of the same order of magnitude.
  • type:'logarithmic': A numeric scale to compare values that differ in order of magnitude.
  • type:'category': A list of unordered categories.
  • type:'time': An ordered list of instants. This scale requires the moment.js library.

In most charts, at least one of the scales is numeric (linear or logarithmic). In scatterplots and bubble charts, both scales are numeric. Time-series charts use a numeric scale and a time scale, but you can also use a category scale. You can also create correlation charts where both scales are categories.

The following table lists common configuration options for all Cartesian axes (the three last are objects, which contain specific configuration parameters...

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