PROJECT_1.0

<!DOCTYPE html>				//class04
<meta charset="utf-8">
<title>Class 4</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;
}
/* NEW: style the earthquakes */
//path.quake {
 // fill: crimson;
}
</style>

<body>
<script>
  
  var width = 960, height = 500;
  var data;  // declare a global variable
  var svg = d3.select("body").append("svg")
      .attr("width", width)
      .attr("height", height)
      .on("mousemove", mousemoved);
  
  // NEW: Add one layer (i.e., <g> element) each for states & plot
  var layer1 = svg.append("g");
  var layer2 = svg.append("g");
  
  var projection = d3.geoAlbersUsa();
  var path = d3.geoPath()
    .projection(projection);
  
  // Topojson for US states
  var url = "https://umbcvis.github.io/classes/class-03/us.json"

function mousemoved() {
     info.text(formatLocation(projection.invert(d3.mouse(this)), projection.scale()));
}
     function formatLocation(p, k) {
  var format = d3.format("." + Math.floor(Math.log(k) / 2 - 2) + "f");
     return (p[1] < 0 ? format(-p[1]) + "°S" : format(p[1]) + "°N") + " "
       + (p[0] < 0 ? format(-p[0]) + "°W" : format(p[0]) + "°E");
}

</script>

https://d3js.org/d3.v4.min.js

https://d3js.org/topojson.v2.min.js