Tristan Wietsma tristanwietsma

Inspired by Trulia Trends - but with code and using SVG.

Example data shows concurrent user sessions over time, taken from a development environment.

This is the map of Nielen Designated Marketing Areas using D3.js. Hover over for data related to each area.

See map here

###Credits

Map adapted from Mike Bostock's map example
Topojson made by converting shapefile from here to topojson via Mike Bostock's instructions
Nielsen rank and TV data via tvb

	/*
	** Client side - /public/src/app.js
	*/

	var myApp = {
	// Collections
	Collections: {
	list: Backbone.Collection.extend()
	},
	// Views

	class LazyCollection extends Backbone.Collection
	indexQuerystring: 'index'
	index: 1
	lastLength: 0
	fetch: (options) ->
	options or= {}
	if options.reset
	@index = 1
	@lastLength = 0
	else

	require 'pp'
	require 'socket'

	module BluetoothPolarHrm
	AF_BLUETOOTH=31 # these are correct for the Linux Bluez stack
	BTPROTO_RFCOMM=3
	class << self
	def connect_bt address_str,channel=1
	bytes=address_str.split(/:/).map {\|x\| x.to_i(16) }
	s=Socket.new(AF_BLUETOOTH, :STREAM, BTPROTO_RFCOMM)

	//Practically all this code comes from https://github.com/alangrafu/radar-chart-d3
	//I only made some additions and aesthetic adjustments to make the chart look better
	//(of course, that is only my point of view)
	//Such as a better placement of the titles at each line end,
	//adding numbers that reflect what each circular level stands for
	//Not placing the last level and slight differences in color
	//
	//For a bit of extra information check the blog about it:
	//http://nbremer.blogspot.nl/2013/09/making-d3-radar-chart-look-bit-better.html

	!function(){
	var Donut3D={};

	function pieTop(d, rx, ry, ir ){
	if(d.endAngle - d.startAngle == 0 ) return "M 0 0";
	var sx = rx*Math.cos(d.startAngle),
	sy = ry*Math.sin(d.startAngle),
	ex = rx*Math.cos(d.endAngle),
	ey = ry*Math.sin(d.endAngle);

	package main

	import "fmt"

	func A(x, y int) {
	fmt.Println("The deferred A-call", x, y)
	}

	func B() int {
	theAnswer := 42