index.html
<!DOCTYPE html>
<meta charset="utf-8">
<link rel="stylesheet" href="weather.css">
<body>
<div id = "description">This document reads in weather data, so you can visualize it.</div>
</body>
<script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.6/d3.min.js" charset="utf-8"></script>
<script src="weather.js"></script>
weather.js
"use strict";
var width = 500, height = 800
var svg = d3.select("body").append("svg")
.attr("width", width)
.attr("height", height)
d3.csv("sanfrancisco.csv", function(error, sfWeather) {
if(error)
console.log(error)
console.log('san francisco weather data', sfWeather)
})