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diannepeng/index.html

Created June 7, 2019 19:14
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Violent Deaths per 50 Years
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index.html
<!DOCTYPE html>
<meta charset="utf-8">
<style>
body {
font: 10px sans-serif;
}
.bar rect {
shape-rendering: crispEdges;
}
.bar text {
fill: #999999;
}
.axis path, .axis line {
fill: none;
stroke: #000;
shape-rendering: crispEdges;
}
</style>
<body>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script>
// Set the base bar color
var color = "blue";
// A comma-separated list of the years, using negative numbers for BCE
var years = [-509, -499, -499, -485, -460,
-480,
-480,
-476,
-464,
-472,
-449,
-460,
-449,
-449,
-438,
-438,
-438,
-438,
-414,
-414,
-396,
-384,
-389,
-390,
-362,
-340,
-340,
-337,
-315,
-295,
-305,
-294,
-283,
-282,
-182,
-282,
-279,
-273,
-250,
-265,
-260,
-249,
-216,
-217,
-230,
-230,
-216,
-208,
-225,
-211,
-216,
-216,
-211,
-82,
-216,
-211,
-217,
-217,
-212,
-216,
-216,
-216,
-216,
-216,
-210,
-208,
-216,
-196,
-210,
-218,
-208,
-208,
-205,
-205,
-203,
-203,
-203,
-189,
-187,
-201,
-190,
-197,
-197,
-196,
-196,
-196,
-194,
-194,
-194,
-193,
-193,
-193,
-176,
-186,
-172,
-178,
-162,
-154,
-154,
-148,
-146,
-133,
-141,
-140,
-140,
-100,
-121,
-119,
-121,
-113,
-120,
-105,
-82,
-114,
-113,
-87,
-107,
-111,
-107,
-89,
-87,
-100,
-109,
-91,
-88,
-100,
-104,
-89,
-82,
-87,
-102,
-102,
-90,
-87,
-85,
-100,
-98,
-88,
-100,
-82,
-71,
-82,
-90,
-89,
-82,
-90,
-84,
-87,
-87,
-90,
-87,
-91,
-88,
-89,
-87,
-89,
-87,
-82,
-88,
-86,
-82,
-87,
-85,
-82,
-87,
-44,
-75,
-83,
-41,
-80,
-77,
-48,
-82,
-80,
-53,
-82,
-72,
-80,
-81,
-82,
-82,
-62,
-82,
-82,
-80,
-63,
-71,
-81,
-75,
-80,
-75,
-75,
-79,
-76,
-73,
-77,
-71,
-71,
-43,
-46,
-73,
-66,
-41,
-71,
-71,
-71,
-43,
-52,
-41,
-46,
-48,
-45,
-35,
-48,
-64,
-46,
-47,
-45,
-46,
-43,
-43,
-46,
-47,
-42,
-48,
-43,
-46,
-54,
-54,
-53,
-46,
-41,
-41,
-48,
-30,
-42,
-45,
-48,
-43,
-41,
-49,
-54,
-53,
-43,
-53,
-53,
-45,
-42,
-42,
-53,
-53,
-43,
-43,
-42,
-51,
-43,
-42,
-42,
-49,
-42,
-46,
-48,
-42,
-46,
-30,
-39,
-43,
-46,
-42,
-46,
-30,
-45,
-43,
-42,
-43,
-44,
-41,
-41,
-43,
-43,
-43,
-40,
-44,
-30,
-41,
-41,
-43,
-43,
-43,
-30,
-30,
-42,
-42,
-43,
-42,
-42,
-40,
-46,
-42,
-39,
-42,
-40,
-42,
-42,
-40,
-26,
-41,
-35,
-40,
-36,
-36,
-36,
-35,
-29,
-78,
-67,
-63,
-43,
-82,
-40,
-31,
-43,
-43,
-52,
-43,
-100,
-43,
-45,
-41,
-40,
-80,
-41,
-43,
-75,
-48,
-209,
-86,
-41,
-31,
-42,
-43,
-88,
-87,
-77,
-80,
-46,
-80,
-114,
-154,
-154,
-220,
-80,
-30,
-41,
-80,
-52,
-80,
-80,
-48,
-48,
-80,
-80,
-80,
-42,
-104,
-41,
-266,
-41,
-41,
-43,
-41,
-41,
-30,
-80,
-80,
-80,
-82,
-80,
-80,
-72,
-71,
-43,
-43,
-41,
-30,
-42,
-41,
-42,
-43,
-82,
-80,
-80,
-80,
-80,
-41,
-80,
-80,
-80,
-41,
-80,
-80];
// A formatter for counts.
var formatCount = d3.format(",.0f");
// Sets the margins
var margin = {top: 40, right: 30, bottom: 60, left: 30},
width = 960 - margin.left - margin.right,
height = 500 - margin.top - margin.bottom;
// Round the minimum year down to the nearest 50 and the maximum year up to the nearest 50
var max = Math.ceil(d3.max(years) / 50) * 50;
var min = Math.floor(d3.min(years) / 50) * 50;
var x = d3.scale.linear()
.domain([min, max])
.range([0, width]);
// Generate a histogram using bins of length 25 years.
var data = d3.layout.histogram()
.bins(d3.range(min, max, 50))
(years);
// Set the bar coloring
var yMax = d3.max(data, function(d){return d.length});
var yMin = d3.min(data, function(d){return d.length});
var colorScale = d3.scale.linear()
.domain([yMin, yMax])
.range([d3.rgb(color).brighter(), d3.rgb(color).darker()]);
var y = d3.scale.linear()
.domain([0, yMax])
.range([height, 0]);
// Ensure the axis uses 50 year increments
var xAxis = d3.svg.axis()
.scale(x)
.orient("bottom")
.tickValues(d3.range(min, max, 50));
var svg = d3.select("body").append("svg")
.attr("width", width + margin.left + margin.right)
.attr("height", height + margin.top + margin.bottom)
.append("g")
.attr("transform", "translate(" + margin.left + "," + margin.top + ")");
var bar = svg.selectAll(".bar")
.data(data)
.enter().append("g")
.attr("class", "bar")
.attr("transform", function(d) { return "translate(" + x(d.x) + "," + y(d.y) + ")"; });
bar.append("rect")
.attr("x", 1)
.attr("width", (x(data[0].dx) - x(0)) - 1)
.attr("height", function(d) { return height - y(d.y); })
.attr("fill", function(d) { return colorScale(d.y) });
bar.append("text")
.attr("dy", ".75em")
.attr("y", -12)
.attr("x", (x(data[0].dx) - x(0)) / 2)
.attr("text-anchor", "middle")
.text(function(d) { return formatCount(d.y); });
svg.append("g")
.attr("class", "x axis")
.attr("transform", "translate(0," + height + ")")
.call(xAxis);
// Graph title
svg.append("text")
.attr("x", (width / 2))
.attr("y", 0 - (margin.top / 2))
.attr("text-anchor", "middle")
.style("font-size", "16px")
.text("Violent Deaths per 50 Years");
// Axis label
svg.append("text")
.attr("class", "x label")
.attr("text-anchor", "middle")
.attr("x", width / 2)
.attr("y", height + 50)
.text("Year");
</script>
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