Prompt for Wednesday, March 1

var height = 200;
var width = 300;
var padding = 20;

var randomPoisson = function(rate) {
	var x = Math.random();
	var i = 0;
	var threshold = Math.exp(-rate);
	while (x > threshold) {
		i++;
		x -= threshold;
		threshold *= rate / i;
	}
	return i;
}

var randomPoissons = function(n, rate) {
	var samples = [];
	for (var i = 0; i < n; i++) {
		samples.push(randomPoisson(rate));
	}
	return samples;
}

var cityData;

// Data from Wikipedia

d3.tsv("crime.tsv", function (error, data) {
	if (error) { console.log(error); }
	
	cityData = data;
	
	var svg = d3.select("#plot").append("svg")
	.attr("height", height).attr("width", width);
	
});