MTClass/index.html

## index.html
<!DOCTYPE html>
<meta charset="utf-8">
<title>class-02 demo</title>

<style>
.line {
  fill: none;
  stroke: black;
  stroke-width: 1px;
}
rect {
  fill: none;
  stroke: black;
  stroke-width: 1px;
}
path.quake, circle.quake {
  fill: crimson;
  fill-opacity: 0.4;
}
path.counties, path.county-border {
  fill: none;
  stroke: #000;
  stroke-opacity: .2;
}
path.state {
  fill: none;
  stroke: #000;
}
</style>

<script src="https://d3js.org/d3.v4.min.js"></script>
<script src="https://d3js.org/topojson.v2.min.js"></script>
<body>
<script>
var width = 960;
var height = 500;
var smallest = 2.5; // threshold magnitude
var data = null; // global variable

// Set the map projection centered on Oklahoma
var projection = d3.geoAlbersUsa()
    .scale(7543)
    .translate([702, -186]);

var path = d3.geoPath()
    .pointRadius(5)
    .projection(projection);

var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height);

var layer1 = svg.append("g");
var layer2 = svg.append("g");

var base = "https://gist.githubusercontent.com/pbogden/935370a5272acff2618b/raw/f4d102d819066bb21a0021b4cbab6502e86bf587/";
var usgs = "https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/all_week.geojson";

// Read and plot the earthquake data
var url = base + "quakes.json";
d3.json(url, plotQuakes);
//d3.json(usgs, plotQuakes);

// Read and plot the state & county boundaries
d3.json(base + "ok.json", plotState);

function plotQuakes(error, json) {
  if (error) console.log(error);

  // Assign the json to a global so we can manipulate it in the console
  data = json;

  // Filter the small earthquakes
  var features = data.features.filter(function(d) { return (+ d.properties.mag >= smallest) });

  // Plot the earthquakes
  layer2.selectAll("path.quake")
      .data(features)
    .enter().append("path")
      .attr("class", "quake")
      .attr("d", path)
}

function plotState(error, ok) {
  if (error) console.log(error);

  var objects = ok.objects.ok;
  var all = topojson.merge(ok, objects.geometries);

  layer1.append("path")
      .datum(all)
      .attr("class", "state")
      .attr("d", path);

  layer1.append("path")
      .datum(topojson.mesh(ok, objects, function(a, b) { return a !== b; }))
      .attr("class", "county-border")
      .attr("d", path);
 }
  </script>

<meta charset="utf-8">
<title>class 3 - states</title>
<style>
body {
  position: absolute;
  margin: 0px;
}
svg {
  background-color: #4682b4;
}
.info {
  font-family: sans-serif;
  color: #000;
  position: absolute;
  top: 450px;
  left: 800px;
}
path {
  fill: #555555;
  stroke: #aaaaaa;
}
</style>

<script src="https://d3js.org/d3.v4.min.js"></script>
<script src="https://d3js.org/topojson.v2.min.js"></script>

<body>
<script>
var width = 960, height = 500;
var data;  // declare a global variable
var layer = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height)
    .on("mousemove", mousemoved);
var info = d3.select("body").append("div")
    .attr("class", "info");
var projection = d3.geoAlbersUsa();
var path = d3.geoPath()
    .projection(projection);
// If you use this URL, you won't need your own copy of the data.
var url = "https://umbcvis.github.io/classes/class-03/us.json"
d3.json(url, plotStates);
function plotStates(error, json) {
  // Create array of GeoJSON features -- this defines the global variable "data"
  data = json.objects.us.geometries.map(function(d) { return topojson.feature(json, d); })
	<!DOCTYPE html>
	<meta charset="utf-8">
	<title>class-02 demo</title>

	<style>
	.line {
	fill: none;
	stroke: black;
	stroke-width: 1px;
	}
	rect {
	fill: none;
	stroke: black;
	stroke-width: 1px;
	}
	path.quake, circle.quake {
	fill: crimson;
	fill-opacity: 0.4;
	}
	path.counties, path.county-border {
	fill: none;
	stroke: #000;
	stroke-opacity: .2;
	}
	path.state {
	fill: none;
	stroke: #000;
	}
	</style>

	<script src="https://d3js.org/d3.v4.min.js"></script>
	<script src="https://d3js.org/topojson.v2.min.js"></script>
	<body>
	<script>
	var width = 960;
	var height = 500;
	var smallest = 2.5; // threshold magnitude
	var data = null; // global variable

	// Set the map projection centered on Oklahoma
	var projection = d3.geoAlbersUsa()
	.scale(7543)
	.translate([702, -186]);

	var path = d3.geoPath()
	.pointRadius(5)
	.projection(projection);

	var svg = d3.select("body").append("svg")
	.attr("width", width)
	.attr("height", height);

	var layer1 = svg.append("g");
	var layer2 = svg.append("g");

	var base = "https://gist.githubusercontent.com/pbogden/935370a5272acff2618b/raw/f4d102d819066bb21a0021b4cbab6502e86bf587/";
	var usgs = "https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/all_week.geojson";

	// Read and plot the earthquake data
	var url = base + "quakes.json";
	d3.json(url, plotQuakes);
	//d3.json(usgs, plotQuakes);

	// Read and plot the state & county boundaries
	d3.json(base + "ok.json", plotState);

	function plotQuakes(error, json) {
	if (error) console.log(error);

	// Assign the json to a global so we can manipulate it in the console
	data = json;

	// Filter the small earthquakes
	var features = data.features.filter(function(d) { return (+ d.properties.mag >= smallest) });

	// Plot the earthquakes
	layer2.selectAll("path.quake")
	.data(features)
	.enter().append("path")
	.attr("class", "quake")
	.attr("d", path)
	}

	function plotState(error, ok) {
	if (error) console.log(error);

	var objects = ok.objects.ok;
	var all = topojson.merge(ok, objects.geometries);

	layer1.append("path")
	.datum(all)
	.attr("class", "state")
	.attr("d", path);

	layer1.append("path")
	.datum(topojson.mesh(ok, objects, function(a, b) { return a !== b; }))
	.attr("class", "county-border")
	.attr("d", path);
	}
	</script>

	<meta charset="utf-8">
	<title>class 3 - states</title>
	<style>
	body {
	position: absolute;
	margin: 0px;
	}
	svg {
	background-color: #4682b4;
	}
	.info {
	font-family: sans-serif;
	color: #000;
	position: absolute;
	top: 450px;
	left: 800px;
	}
	path {
	fill: #555555;
	stroke: #aaaaaa;
	}
	</style>

	<script src="https://d3js.org/d3.v4.min.js"></script>
	<script src="https://d3js.org/topojson.v2.min.js"></script>

	<body>
	<script>
	var width = 960, height = 500;
	var data; // declare a global variable
	var layer = d3.select("body").append("svg")
	.attr("width", width)
	.attr("height", height)
	.on("mousemove", mousemoved);
	var info = d3.select("body").append("div")
	.attr("class", "info");
	var projection = d3.geoAlbersUsa();
	var path = d3.geoPath()
	.projection(projection);
	// If you use this URL, you won't need your own copy of the data.
	var url = "https://umbcvis.github.io/classes/class-03/us.json"
	d3.json(url, plotStates);
	function plotStates(error, json) {
	// Create array of GeoJSON features -- this defines the global variable "data"
	data = json.objects.us.geometries.map(function(d) { return topojson.feature(json, d); })