Brendan Sudol brendansudol

Learning D3

1. Read Up

Spend a few hours (minimum) going through these materials. It's okay if you don't understand half of it on your first time through (75% is way too much though). I found it super helpful to write out the code snippets and test them out while following along. There are now quite a few D3 tutorials out there, but I found these particularly helpful:

A d3 recreation of Etsy's shopping by color animation.

Efficient Market Hypothesis, from Economics

When it comes to investing, many economists believe that a blindfolded monkey throwing darts at a newspaper’s financial pages could select a portfolio of stocks that would do just as well as Wall Street professionals. The idea that picking good stocks is just a matter of luck comes from a fundamental theory in financial economics known as the Efficient Market Hypothesis (EMH).

Introduced by Eugene Fama in the 1960s, the essence of EMH is that at any

	var width = 660,
	height = 600;

	var color = d3.scale.linear()
	.domain([0, width/4, width/4 * 2, width/4 * 3, width])
	.range(["#fb000f", "#6e00fb", "#00fbec", "#8dfb00", "#fb3c00"])
	.interpolate(d3.interpolateHsl);

	var svg = d3.select("#colorz").append("svg")
	.attr("width", width)

	<!doctype html>
	<html>
	<head>
	<script type="text/javascript" src="http://mbostock.github.com/d3/d3.js"></script>
	<link type="text/css" rel="stylesheet" href="style.css"/>
	<style type="text/css"></style>
	</head>
	<body>
	<p id="chart">
	<p id="menu"><b>Top States by Age Bracket, 2008</b><br>Age: <select></select>

	cat 1/.txt 2/.txt 3/.txt 4/.txt 5/*.txt > combined.txt

	awk '{arr[$1]+=1} END {for (i in arr) {print i,arr[i]}}' combined.txt > counts.txt

	sort -nrk 2 counts.txt