November 2017
Beginner to intermediate
298 pages
6h 47m
English
Content preview from Learning D3.js 5 Mapping - Second Edition
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The SVG coordinate system
What about position? Where do these primitives draw inside the SVG element? What if you wanted to put a circle in the top-left and another one bottom-right? Where do you start?
SVG is positioned by a grid system, similar to the Cartesian coordinate system. However, in SVG (0,0) is the top-left corner. The x axis proceeds horizontally from left to right starting at 0. The y axis also starts at 0 and extends downward. See the following illustration:
What about drawing shapes on top of each other? How do you control the z index? In SVG, there is no z coordinate. Depth is determined by the order in which the shape is ...
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