Book Image

HTML5 Graphing and Data Visualization Cookbook

By : Ben Fhala
Book Image

HTML5 Graphing and Data Visualization Cookbook

By: Ben Fhala

Overview of this book

The HTML5 canvas tag makes creating any plot shape easy, all you have to do then is fill it with exciting visualizations written in JavaScript or using other visualization tools. "HTML5 Graphing and Data Visualization Cookbook" is the perfect break into the world of Canvas, charts, and graphs in HTML5 and JavaScript. In this book we will go through a journey of getting to know the technology by creating and planning data-driven visualizations. This cookbook is organized in a linear, progressive way so it can be read from start to finish, as well as be used as a resource for specific tasks.This book travels through the steps involved in creating a fully interactive and animated visualization in HTML5 and JavaScript. You will start from very simple "hello world"ù samples and quickly dive deeper into the world of graphs and charts in HTML5. Followed by learning how canvas works and carrying out a group of tasks geared at taking what we learned and implementing it in a variety of chart types. With each chapter the content becomes more complex and our creations become more engaging and interactive.Our goal is that by the end of this book you will have a strong foundation; knowing when to create a chart on your own from scratch and when it would be a good idea to depend on other APIs.We finish our book in our last two chapters exploring Google maps and integrating everything we learnt into a full project.

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HTML5 Graphing and Data Visualization Cookbook
Ben Fhala
Nov, 2012 | 344 pages
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Table of Contents (17 chapters)
HTML5 Graphing and Data Visualization Cookbook
HTML5 Graphing and Data Visualization Cookbook
Credits
Credits
About the Author
About the Author
About the Reviewer
About the Reviewer
www.PacktPub.com
www.PacktPub.com
Preface
Preface
Free Chapter
1
Drawing Shapes in Canvas
Drawing Shapes in Canvas
Introduction
Graphics with 2D canvas
Starting from basic shapes
Layering rectangles to create the flag of Greece
Creating shapes using paths
Creating complex shapes
Adding more vertices
Overlapping shapes to create other shapes
2
Advanced Drawing in Canvas
Advanced Drawing in Canvas
Introduction
Drawing arcs
Drawing curves with a control point
Creating a Bezier curve
Integrating images into our art
Drawing with text
Understanding pixel manipulation
3
Creating Cartesian-based Graphs
Creating Cartesian-based Graphs
Introduction
Building a bar chart from scratch
Spreading data in a scatter chart
Building line charts
Creating the flying brick chart (waterfall chart)
Building a candlestick chart (stock chart)
4
Let's Curve Things Up
Let's Curve Things Up
Introduction
Building a bubble chart
Creating a pie chart
Using a doughnut chart to show relationships
Leveraging a radar
Structuring a tree chart
5
Getting Out of the Box
Getting Out of the Box
Introduction
Going through a funnel (a pyramid chart)
Revisiting lines: making the line chart interactive
Tree mapping and recursiveness
Adding user interaction into tree mapping
Making an interactive click meter
6
Bringing Static Things to Life
Bringing Static Things to Life
Introduction
Stacking graphical layers
Moving to an OOP perspective
Animating independent layers
Adding an interactive legend
Creating a context-aware legend
7
Depending on the Open Source Sphere
Depending on the Open Source Sphere
Introduction
Animating a gauge meter (jqPlot)
Creating an animated 3D chart (canvas3DGraph)
Charting over time (flotJS)
Building a clock with RaphaelJS
Making a sunburst chart with InfoVis
8
Playing with Google Charts
Playing with Google Charts
Introduction
Getting started with a pie chart
Creating charts using the ChartWrapper
Changing data source to Google Spreadsheet
Customizing the chart properties with an options object
Adding a dashboard to charts
9
Using Google Maps
Using Google Maps
Introduction
Creating a geographic chart with Google Visualization API
Obtaining a Google API key
Building a Google map
Adding markers and events
Customizing controls and overlapping maps
Redesigning maps using styles
10
Maps in Action
Maps in Action
Introduction
Connecting a Twitter feed to a Google map
Building an advanced interactive marker
Adding multiple tweets into an InfoWindow bubble
Customizing the look and feel of markers
Final project: building a live itinerary
Index
Index

Adding a dashboard to charts

In this last recipe of this chapter we will add live controllers that will enable the users to change the filtering of data to see less or more information.

Getting ready

We will start from scratch so nothing to worry about.

How to do it...

The following are the steps needed to create a basic dashboard controller:

  1. Create an HTML file and link it to an external JavaScript file (in our case we will use the file 08.05.slider.js):

    <!DOCTYPE html>
<html>
  <head>
    <title>Google Charts DASHBOARD</title>
    <meta charset="utf-8" />   
    <script src="https://www.google.com/jsapi"></script>
    <script src="./08.05.slider.js"></script>		
  </head>
  <body style="background:#fafafa">
    <div id="chart"></div>
    <div id="dashboard"></div>
    <div id="filter"></div>
  </body>
</html>

  2. Now, it's time to get into 08.05.slider.js and to load the Google Visualization...

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