Download D3.js in Action by Elijah Meeks PDF

By Elijah Meeks

D3.js in motion is a realistic educational for developing interactive snap shots and data-driven purposes utilizing D3.js. You'll commence with in-depth causes of D3's out-of-the-box layouts, in addition to dozens of functional use instances that align with sorts of visualizations. Then, you'll discover useful recommendations for content material construction, animation, and representing dynamic data—including interactive pix and information streamed reside over the internet. the ultimate chapters enable you to use D3's wealthy interplay version because the origin for an entire internet program. in spite of everything, you'll be capable of combine D3.js into your net improvement technique and rework any website right into a extra enticing and complex consumer event.

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Additional info for D3.js in Action

Example text

Select() syntax. 5) to set the opacity of an element to 50%. html to include a style sheet. 22, you see that its style is set by the reference to rect in the style sheet as well as the class attribute of active. Style sheets can also refer to a state of the element, so with :hover you can change the way an element looks when the user mouses over that element. active class. active class. active class. about other complex CSS selectors in more detail in a book devoted to that subject. For this book, we’ll focus mostly on using CSS classes and IDs for selection and to change style.

Instead, you’ll want to use D3 to do the drawing with a variety of helper functions, or rely on other SVG elements that represent simple shapes (known as geometric or graphical primitives) using more readable attributes. area to create line and area charts. html to look like the following listing, which includes the necessary code for displaying SVG, as well as examples of the various shapes you might use. 17 Inspecting the DOM of a web page with an SVG canvas reveals the nested graphical elements as well as the style and attributes that determine their position.

The most basic element on a web page, a

that represents a rectangle into which you can drop paragraphs, lists, and tables, can be selected and modified in the same way you can select and modify a country on a web map, or individual circles and lines that make up a complex data visualization. To be able to select items on a web page, you have to ensure that they’re built in a manner that makes them a part of the traditional structure of a web page. You can’t select items in a Java applet, or in a Flash runtime, nor can you select the labels on an embedded Google map, but if you create these elements so that they exist as elements in your web page, then you give yourself tremendous flexibility.

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