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Home > Data > Data Visualization > Data Visualization with D3 4.x Cookbook
Data Visualization with D3 4.x Cookbook
Data Visualization with D3 4.x Cookbook

Data Visualization with D3 4.x Cookbook: Visualization Strategies for Tackling Dirty Data , Second Edition

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eBook Feb 2017 380 pages 2nd Edition
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eBook Feb 2017 380 pages 2nd Edition
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Data Visualization with D3 4.x Cookbook

Chapter 2. Be Selective

In this chapter we will cover:

  • Selecting a single element
  • Selecting multiple elements
  • Iterating through a selection
  • Performing subselection
  • Function chaining
  • Manipulating raw selection

Introduction

One of the most fundamental tasks that you will need to perform with any data visualization project using D3 is selection. Selection helps you target certain visual elements on the page. If you are already familiar with the W3C-standardized CSS selector or other similar selector APIs provided by popular JavaScript libraries, such as jQuery and Zepto.js, then you will find yourself right at home with D3's selection API. Don't worry if you haven't used the selector API before; this chapter is designed to cover this topic in steps with the help of some very visual recipes. It will cover pretty much all common use cases for your data visualization needs.

Introducing selection

Selector support is standardized by W3C, so all modern web browsers have built-in support for the selector API. However, the basic W3C selector API has limitations when it comes to Web development, especially in the data visualization realm. The standard W3C selector API provides only the selector...

Selecting a single element

It is very common that at times you will need to select a single element on a page to perform some visual manipulation. This recipe will show you how to perform a targeted single element selection in D3 using a CSS selector.

Getting ready

Open your local copy of the following file in your web browser:

https://github.com/NickQiZhu/d3-cookbook-v2/blob/master/src/chapter2/single-selection.html .

How to do it...

Let's select something (a paragraph element perhaps) and produce the classic hello world on screen.

<p id="target"></p> <!-- A --> 
 
<script type="text/javascript"> 
    d3.select("p#target") // <-- B 
    .text("Hello world!"); // <-- C 
</script>

This recipe simply produces text Hello world! on your screen.

How it works...

The d3.select command is used to perform a single-element selection in D3. This method accepts a string that represents a valid CSS3 selector or an element object...

Selecting multiple elements

Often selecting a single element is not good enough, but rather you want to apply a certain change to a set of elements on the page simultaneously. In this recipe, we will play with the D3 multi-element selector and its selection API.

Getting ready

Open your local copy of the following file in your web browser:

https://github.com/NickQiZhu/d3-cookbook-v2/blob/master/src/chapter2/multiple-selection.html .

How to do it...

This is what the d3.selectAll function is designed for. In the following code snippet, we will select three different div elements and enhance them with some CSS classes:

<div></div> 
<div></div> 
<div></div> 
 
<script type="text/javascript"> 
    d3.selectAll("div") // <-- A 
    .attr("class", "red box"); // <-- B 
</script>

This code snippet produces the following visual:

How to do it...

Multi-element selection

How it works...

First thing you probably will notice in this...

Iterating through a selection

Sometimes it is handy to be able to iterate through each element within a selection and modify each element differently according to their position. In this recipe, we will show you how this can be achieved using D3 selection iteration API.

Getting ready

Open your local copy of the following file in your web browser:

https://github.com/NickQiZhu/d3-cookbook-v2/blob/master/src/chapter2/selection-iteration.html .

How to do it...

D3 selection object provides a simple iterator interface to perform iteration in a similar fashion to how you will iterate through a JavaScript array. In this example, we will iterate through the three selected div elements we worked with in the previous recipe and annotate them with an index number as follows:

<div></div> 
<div></div> 
<div></div> 
 
<script type="text/javascript"> 
d3.selectAll("div") // <-- A 
            .attr("class", "red box")...

Performing subselection

It is quite common that you will need to perform scoped selection when working on visualization. For example, selecting all div elements within a particular section element is one such use case of scoped selection. In this recipe, we will demonstrate how this can be achieved with different approaches and their advantages and disadvantages.

Getting ready

Open your local copy of the following file in your web browser:

https://github.com/NickQiZhu/d3-cookbook-v2/blob/master/src/chapter2/sub-selection.html .

How to do it...

The following code example selects two different div elements using two different styles of subselection supported by D3:

<section id="section1"> 
    <div> 
        <p>blue box</p> 
    </div> 
</section> 
<section id="section2"> 
    <div> 
        <p>red box</p> 
    </div> 
</section> 
 
<script type="text/javascript"> 
    d3.select("#section1...

Introduction

One of the most fundamental tasks that you will need to perform with any data visualization project using D3 is selection. Selection helps you target certain visual elements on the page. If you are already familiar with the W3C-standardized CSS selector or other similar selector APIs provided by popular JavaScript libraries, such as jQuery and Zepto.js, then you will find yourself right at home with D3's selection API. Don't worry if you haven't used the selector API before; this chapter is designed to cover this topic in steps with the help of some very visual recipes. It will cover pretty much all common use cases for your data visualization needs.

Introducing selection

Selector support is standardized by W3C, so all modern web browsers have built-in support for the selector API. However, the basic W3C selector API has limitations when it comes to Web development, especially in the data visualization realm. The standard W3C selector API provides only the selector, but not the...

Selecting a single element

It is very common that at times you will need to select a single element on a page to perform some visual manipulation. This recipe will show you how to perform a targeted single element selection in D3 using a CSS selector.

Getting ready

Open your local copy of the following file in your web browser:

https://github.com/NickQiZhu/d3-cookbook-v2/blob/master/src/chapter2/single-selection.html .

How to do it...

Let's select something (a paragraph element perhaps) and produce the classic hello world on screen.

<p id="target"></p> <!-- A --> 
 
<script type="text/javascript"> 
    d3.select("p#target") // <-- B 
    .text("Hello world!"); // <-- C 
</script>

This recipe simply produces text Hello world! on your screen.

How it works...

The d3.select command is used to perform a single-element selection in D3. This method accepts a string that represents a valid CSS3 selector or an element object if you already...

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Key benefits

  • • Learn about D3 4.0 from the inside out and master its new features
  • • Utilize D3 packages to generate graphs, manipulate data, and create beautiful presentations
  • • Solve real-world visualization problems with the help of practical recipes

Description

Master D3.js and create amazing visualizations with the Data Visualization with D3 4.x Cookbook. Written by professional data engineer Nick Zhu, this D3.js cookbook features over 65 recipes. ? Solve real-world visualization problems using D3.js practical recipes ? Understand D3 fundamentals ? Includes illustrations, ready-to-go code samples and pre-built chart recipes

Who is this book for?

Who is this book for? úÿÿDevelopers and analysts familiar with HTML, CSS and JavaScript who want to get the most out of D3.js ? Great as a quick-reference guide for experienced data visualization developers

What you will learn

  • With Nick?s expertise, discover how to create data-driven dynamic visualizations which take advantage of JavaScript?s latest capabilities. This cookbook helps you to fully understand D3.js fundamentals and advanced techniques, so that you can make dynamic and interactive charts and graphs.

Product Details

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Publication date, Length, Edition, Language, ISBN-13
Publication date : Feb 28, 2017
Length: 380 pages
Edition : 2nd
Language : English
ISBN-13 : 9781786469960
Category :
Data
Languages :
JavaScript
Concepts :
Data Visualization
Tools :
D3

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Product Details

Publication date : Feb 28, 2017
Length: 380 pages
Edition : 2nd
Language : English
ISBN-13 : 9781786469960
Category :
Data
Languages :
JavaScript
Concepts :
Data Visualization
Tools :
D3

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Table of Contents

13 Chapters
1. Getting Started with D3.js Chevron down icon Chevron up icon
1. Getting Started with D3.js
Introduction
Setting up a simple D3 development environment
Setting up an NPM-based development environment
Understanding D3-style JavaScript
2. Be Selective Chevron down icon Chevron up icon
2. Be Selective
Introduction
Selecting a single element
Selecting multiple elements
Iterating through a selection
Performing subselection
Function chaining
Manipulating the raw selection
3. Dealing with Data Chevron down icon Chevron up icon
3. Dealing with Data
Introduction
Binding an array as data
Binding object literals as data
Binding functions as data
Working with arrays
Filtering with data
Sorting with data
Loading data from a server
Asynchronous data loading using queue
4. Tipping the Scales Chevron down icon Chevron up icon
4. Tipping the Scales
Introduction
Using continuous scales
Using the time scale
Using the ordinal scale
Interpolating a string
Interpolating colors
Interpolating compound objects
5. Playing with Axes Chevron down icon Chevron up icon
5. Playing with Axes
Introduction
Working with basic axes
Customizing ticks
Drawing grid lines
Dynamic rescaling of axes
6. Transition with Style Chevron down icon Chevron up icon
6. Transition with Style
Introduction
Animating a single element
Animating multiple elements
Using ease
Using tweening
Using transition chaining
Using transition filter
Listening to transitional events
Working with timer
7. Getting into Shape Chevron down icon Chevron up icon
7. Getting into Shape
Introduction
Creating simple shapes
Using a line generator
Using line curve
Changing line tension
Using an area generator
Using area curve
Using an arc generator
Implementing arc transition
8. Chart Them Up Chevron down icon Chevron up icon
8. Chart Them Up
Introduction
Creating a line chart
Creating an area chart
Creating a scatterplot chart
Creating a bubble chart
Creating a bar chart
9. Lay Them Out Chevron down icon Chevron up icon
9. Lay Them Out
Introduction
Building a pie chart
Building a stacked area chart
Building a treemap
Building a tree
Building an enclosure diagram
10. Interacting with Your Visualization Chevron down icon Chevron up icon
10. Interacting with Your Visualization
Introduction
Interacting with mouse events
Interacting with a multi-touch device
Implementing zoom and pan behavior
Implementing drag behavior
11. Using Force Chevron down icon Chevron up icon
11. Using Force
Introduction
Using gravity and charge
Customizing velocity
Setting the link constraint
Using force to assist visualization
Manipulating force
Building a force-directed graph
12. Knowing Your Map Chevron down icon Chevron up icon
12. Knowing Your Map
Introduction
Projecting the US map
Projecting the world map
Building a choropleth map
13. Test Drive Your Visualization Chevron down icon Chevron up icon
13. Test Drive Your Visualization
Introduction
Getting Jasmine and setting up the test environment
Test driving your visualization - chart creation
Test driving your visualization - SVG rendering
Test driving your visualization - pixel-perfect bar rendering

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Customer reviews

Rating distribution
Full star icon Full star icon Half star icon Empty star icon Empty star icon 2.3
(3 Ratings)
5 star 33.3%
4 star 0%
3 star 0%
2 star 0%
1 star 66.7%
007 Nov 07, 2017
Full star icon Full star icon Full star icon Full star icon Full star icon 5
Wow, this is the best book about d3js so far. I have very little knowledge about javascript programming and have zero knowledge about d3js library. This book explained the topic very well. I have read one other book about d3js library but this book is way better.
Amazon Verified review Amazon
lid6j86 Jan 23, 2019
Full star icon Empty star icon Empty star icon Empty star icon Empty star icon 1
First off let me say that the book is dense with example projects that get to the point. That being said... With the way they write the book they must not expect you to follow any of the examples or write your own practice code because they leave out swathes in each example.If you're looking for an extremely hands-off "hey just download the code we wrote and read it" then this book is for you. If you're like me and want to actually write the code as you are following along, then you will be disappointed because more than a little code, whether it be html, css, or javascript, is missing from the book. They either leave it out or just skim over it with partial code. It comes off as extremely lazy authorship in my opinion. It's not like it would have added that many extra pages to the book to add the little bits that were left out, and it would have made it far easier to follow the code and results.I'm not saying any focus should be placed on the extra code. The focus of discussion should stay specifically on the d3 content, but at least add the code.They shouldn't force you to download code from their crappy website that has all kinds of pop ups, forces registration, and attempts to track you.
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AM Aug 17, 2019
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Delivered a damaged book!!
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About the author

Profile icon Nick Zhu
Nick Zhu
朱启（Nick Zhu）是一位专业的程序员和数据工程师，在软件开发、大数据和机器学习领域拥有十几年的实战经验。目前，他担任在线购物元搜索引擎Yroo的首席技术官，同时也是该网站的创始人之一。此外，他还是基于D3开发的、可用于制作多维图表的流行开发库dc.js的创始人。
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