Jason Davies
jasondavies
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A test for wrapping using the d3.geo.tile plugin.
Based on Mike Bostock’s example.
A version of Mike Bostock’s hexbin example, modified to use hexagons rotated by 90°.
Aside from rotating the hexagon primitives, the only other change is to swap the meaning of x and y, for all inputs and outputs of the plugin.
| .DS_Store | |
| build | |
| node_modules |
| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| .voronoi { | |
| fill-opacity: .5; | |
| } | |
| .delaunay { |
| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> body { font-family: sans-serif; } </style> | |
| <body> | |
| <script src="require.js"></script> | |
| <script> | |
| require.config({ | |
| paths: { | |
| d3: "http://d3js.org/d3.v3.min" | |
| } |
| #!/usr/bin/env node | |
| var d3 = require("./"); | |
| var csv = ["foo", "bar", "baz", "foobarbaz", "BLAHBLAH"].join(",") + "\n" + | |
| d3.csv.formatRows(d3.range(10000).map(function() { | |
| return d3.range(5).map(Math.random); | |
| })); | |
| benchmark("Slow", function() { parseSlow(csv); }); |
jasondavies
/ README.md
A demonstration of how to calculate the areas of Voronoi regions clipped by geographic features using D3.
D3’s implementation of the Sutherland–Hodgman algorithm only works for convex clip polygons, but we exploit the fact that Voronoi regions are guaranteed to be convex, and use each Voronoi region as a clip polygon, with the projected geographic boundary as a subject polygon.
In response to a question by Gonzalo Bellver.
There seems to be a bug in voronoi clipping; setting .clipExtent([[-1, -10], [width + 1, height + 1]]) works around the issue for these particular points.
| build | |
| node_modules |