In this chapter, a high-level overview of Scalable Vector Graphics (SVG) will be presented by explaining how it operates and what elements it encompasses. In a browser context, SVG is very similar to HTML and is one of the means by which D3 expresses its power. Understanding the nodes and attributes of SVG will empower us to create many kinds of visualizations, not just maps. This chapter includes the following points:
- A general overview of SVG and its key elements
- The SVG coordinate system
- The primary elements of SVG (lines, rectangles, circles, polygons, and paths)
SVG, an XML markup language, is designed to describe two-dimensional vector graphics. The SVG markup language resides in the DOM as a node that describes exactly how to draw a shape (a curve, line, circle, or polygon). Just like HTML, SVG tags can also be styled from standard CSS...
