nohevog1/.block

## .block
license: mit

## README.md

      
    Raw
  

              README.md
            
          
    Built with blockbuilder.org
forked from nohevog1's block: Raster&VectorII_HW8

  
## index.html
<!DOCTYPE html>
<meta charset="utf-8">
<style>

  body {
  position: absolute;
  margin: 0px;
  font: 16px sans-serif;
  }

body {
  margin: 0;
}

path {
  fill: none;
  stroke: blue;
  stroke-linejoin: round;
  stroke-width: 1.5px;
}
/* NEW: style the earthquakes */
path.quake {
  fill: yellow;
}
</style>
<svg>

</svg>
<script src="//d3js.org/d3.v4.min.js"></script>
<script src="//d3js.org/d3-tile.v0.0.min.js"></script>
<script src="//d3js.org/topojson.v1.min.js"></script>
<script>

var pi = Math.PI,
    tau = 2 * pi;

var width = Math.max(960, window.innerWidth),
    height = Math.max(500, window.innerHeight);

// Initialize the projection to fit the world in a 1×1 square centered at the origin.
var projection = d3.geoMercator()
    .scale(1 / tau)
    .translate([0, 0]);

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

var tile = d3.tile()
    .size([width, height]);

var zoom = d3.zoom()
    .scaleExtent([1 << 11, 1 << 14])
    .on("zoom", zoomed);

var svg = d3.select("svg")
    .attr("width", width)
    .attr("height", height)
     .on("mousemove", mousemoved);


var raster = svg.append("g");

var vector = svg.append("path");

var us = "https://umbcvis.github.io/classes/class-03/us.json";

d3.json(us, function(error, us) {
  if (error) throw error;
	var states  = us.objects.us.geometries.map(function(d) { return topojson.feature(us, d); 		})
    vector
      .datum(topojson.mesh(us, us.objects.us));

// Compute the projected initial center.
  var center = projection([-98.5, 39.5]);

// Apply a zoom transform equivalent to projection.{scale,translate,center}.
  svg
      .call(zoom)
      .call(zoom.transform, d3.zoomIdentity
          .translate(width / 2, height / 2)
          .scale(1 << 12)
          .translate(-center[0], -center[1]));

 // NEW: Title
svg.append('text')
    .attr('x', width / 2)
    .attr('y', "1.5em")
    .style('font-size', '1.5em')
    .style('text-anchor', 'middle')
		.style('fill', 'Magenta')
		.text('Weekly display of Earthquakes in the United States')
});

function zoomed() {
  var transform = d3.event.transform;

  var tiles = tile
      .scale(transform.k)
      .translate([transform.x, transform.y])
      ();

  projection
      .scale(transform.k / tau)
      .translate([transform.x, transform.y]);

  vector
      .attr("d", path);

  var image = raster
      .attr("transform", stringify(tiles.scale, tiles.translate))
    .selectAll("image")
    .data(tiles, function(d) { return d; });

  image.exit().remove();

  image.enter().append("image")
      .attr("xlink:href", function(d) { return "http://" + "abc"[d[1] % 3] + ".tile.openstreetmap.org/" + d[2] + "/" + d[0] + "/" + d[1] + ".png"; })
      .attr("x", function(d) { return d[0] * 256; })
      .attr("y", function(d) { return d[1] * 256; })
      .attr("width", 256)
      .attr("height", 256);
}

function stringify(scale, translate) {
  var k = scale / 256, r = scale % 1 ? Number : Math.round;
  return "translate(" + r(translate[0] * scale) + "," + r(translate[1] * scale) + ") scale(" + k + ")";
}
var path = d3.geoPath()
    .projection(projection);

// NEW: Read the earthquake data and send it to function "plotQuakes"
var usgs = "https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/all_week.geojson";

// Topojson for US states
var url = "https://umbcvis.github.io/classes/class-03/us.json"

d3.json(url, plotStates);
d3.json(usgs, plotQuakes);

function plotStates(error, json) {

// Convert topojson to an Array of GeoJSON features
// This defines "data", a global variable that can be manipulated in the developer console
  data = json.objects.us.geometries.map(function(d) { return topojson.feature(json, d); })

}

// NEW: Function that plots the earthquake data
function plotQuakes(error, json) {
  if (error) return console.log(error);

  // Global variable, data, will be visible in the console
  data = json;

  // Extract an array of feature objects, one for each earthquake
  var features = json.features;

  // Plot the earthquakes
  var layer2 = svg.append("g");

  layer2.selectAll("path.quake")
      .data(features)
    .enter().append("path")
      .attr("class", "quake")
      .attr("d", path)
     }
// Add a <div> element to label the mouse position
var info = d3.select("body").append("div")
    .attr("class", "info");

  // Label the geographic coordinates of the mouse position on the map
function mousemoved() {
  info.text(formatLocation(projection.invert(d3.mouse(this)), projection.scale()));
}

// Format the text that will be displayed in the the <div> element on the map
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>
	<!DOCTYPE html>
	<meta charset="utf-8">
	<style>

	body {
	position: absolute;
	margin: 0px;
	font: 16px sans-serif;
	}

	body {
	margin: 0;
	}

	path {
	fill: none;
	stroke: blue;
	stroke-linejoin: round;
	stroke-width: 1.5px;
	}
	/* NEW: style the earthquakes */
	path.quake {
	fill: yellow;
	}
	</style>
	<svg>

	</svg>
	<script src="//d3js.org/d3.v4.min.js"></script>
	<script src="//d3js.org/d3-tile.v0.0.min.js"></script>
	<script src="//d3js.org/topojson.v1.min.js"></script>
	<script>

	var pi = Math.PI,
	tau = 2 * pi;

	var width = Math.max(960, window.innerWidth),
	height = Math.max(500, window.innerHeight);

	// Initialize the projection to fit the world in a 1×1 square centered at the origin.
	var projection = d3.geoMercator()
	.scale(1 / tau)
	.translate([0, 0]);

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

	var tile = d3.tile()
	.size([width, height]);

	var zoom = d3.zoom()
	.scaleExtent([1 << 11, 1 << 14])
	.on("zoom", zoomed);

	var svg = d3.select("svg")
	.attr("width", width)
	.attr("height", height)
	.on("mousemove", mousemoved);


	var raster = svg.append("g");

	var vector = svg.append("path");

	var us = "https://umbcvis.github.io/classes/class-03/us.json";

	d3.json(us, function(error, us) {
	if (error) throw error;
	var states = us.objects.us.geometries.map(function(d) { return topojson.feature(us, d); })
	vector
	.datum(topojson.mesh(us, us.objects.us));

	// Compute the projected initial center.
	var center = projection([-98.5, 39.5]);

	// Apply a zoom transform equivalent to projection.{scale,translate,center}.
	svg
	.call(zoom)
	.call(zoom.transform, d3.zoomIdentity
	.translate(width / 2, height / 2)
	.scale(1 << 12)
	.translate(-center[0], -center[1]));

	// NEW: Title
	svg.append('text')
	.attr('x', width / 2)
	.attr('y', "1.5em")
	.style('font-size', '1.5em')
	.style('text-anchor', 'middle')
	.style('fill', 'Magenta')
	.text('Weekly display of Earthquakes in the United States')
	});

	function zoomed() {
	var transform = d3.event.transform;

	var tiles = tile
	.scale(transform.k)
	.translate([transform.x, transform.y])
	();

	projection
	.scale(transform.k / tau)
	.translate([transform.x, transform.y]);

	vector
	.attr("d", path);

	var image = raster
	.attr("transform", stringify(tiles.scale, tiles.translate))
	.selectAll("image")
	.data(tiles, function(d) { return d; });

	image.exit().remove();

	image.enter().append("image")
	.attr("xlink:href", function(d) { return "http://" + "abc"[d[1] % 3] + ".tile.openstreetmap.org/" + d[2] + "/" + d[0] + "/" + d[1] + ".png"; })
	.attr("x", function(d) { return d[0] * 256; })
	.attr("y", function(d) { return d[1] * 256; })
	.attr("width", 256)
	.attr("height", 256);
	}

	function stringify(scale, translate) {
	var k = scale / 256, r = scale % 1 ? Number : Math.round;
	return "translate(" + r(translate[0] * scale) + "," + r(translate[1] * scale) + ") scale(" + k + ")";
	}
	var path = d3.geoPath()
	.projection(projection);

	// NEW: Read the earthquake data and send it to function "plotQuakes"
	var usgs = "https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/all_week.geojson";

	// Topojson for US states
	var url = "https://umbcvis.github.io/classes/class-03/us.json"

	d3.json(url, plotStates);
	d3.json(usgs, plotQuakes);

	function plotStates(error, json) {

	// Convert topojson to an Array of GeoJSON features
	// This defines "data", a global variable that can be manipulated in the developer console
	data = json.objects.us.geometries.map(function(d) { return topojson.feature(json, d); })

	}

	// NEW: Function that plots the earthquake data
	function plotQuakes(error, json) {
	if (error) return console.log(error);

	// Global variable, data, will be visible in the console
	data = json;

	// Extract an array of feature objects, one for each earthquake
	var features = json.features;

	// Plot the earthquakes
	var layer2 = svg.append("g");

	layer2.selectAll("path.quake")
	.data(features)
	.enter().append("path")
	.attr("class", "quake")
	.attr("d", path)
	}
	// Add a <div> element to label the mouse position
	var info = d3.select("body").append("div")
	.attr("class", "info");

	// Label the geographic coordinates of the mouse position on the map
	function mousemoved() {
	info.text(formatLocation(projection.invert(d3.mouse(this)), projection.scale()));
	}

	// Format the text that will be displayed in the the <div> element on the map
	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>