May 2019
Beginner to intermediate
650 pages
14h 50m
English
Content preview from Learn D3.js
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Centroids and bounds
Bounds are the limits of the rectangle that contains the entire shape, and are an important measure for selecting and zooming to shape boundaries. Centroids are the center of gravity of a shape, and are useful for placing labels or symbols near the middle of the shape. Centroids and bounds may be computed on the sphere, before the projection occurs, or on the projected plane.
Planar centroids and bounds are computed with d3.geoPath() methods. The geoPath.centroid(object) method returns an array with pixel coordinates [x,y] for the projected planar centroid of a shape. The geoPath.bounds(object) method returns pixel coordinates of two opposite corners of a rectangle that contains the projected object, in an array with ...
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I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
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