Built with blockbuilder.org
forked from nohevog1's block: US_Earthquakes
Last active
March 30, 2017 19:47
-
-
Save nohevog1/b8fcb722282250e830066d5a10918aec to your computer and use it in GitHub Desktop.
OK_Quakes_Raster&Vector_HW7
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| license: mit |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <title>Class 5</title> | |
| <style> | |
| body { | |
| position: absolute; | |
| margin: 0px; | |
| font: 16px sans-serif; | |
| } | |
| svg { | |
| background-color: #4682b4; | |
| } | |
| .info { | |
| color: #000; | |
| position: absolute; | |
| top: 450px; | |
| left: 800px; | |
| } | |
| path { | |
| fill: #555555; | |
| stroke: #aaaaaa; | |
| } | |
| path.quake { | |
| fill: crimson; | |
| } | |
| </style> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| <script src="https://d3js.org/topojson.v2.min.js"></script> | |
| <script src="//d3js.org/topojson.v1.min.js"></script> | |
| <body> | |
| <script> | |
| var width = 960, height = 500; | |
| var svg = d3.select("svg"), | |
| width = +svg.attr("width"), | |
| height = +svg.attr("height"); | |
| var projection = d3.geoMercator() | |
| .scale((1 << 18) / tau) | |
| .translate([width / 2, height / 2]) | |
| .center([-97.0929, 35.0078]); | |
| var path = d3.geoPath() | |
| .projection(projection); | |
| var Oklahoma = "https://raw.githubusercontent.com/nohevog1/Classes/master/OK.json" | |
| d3.json(Oklahoma, function(error, Oklahoma) { | |
| if (error) throw error; | |
| var tiles = d3.tile() | |
| .size([width, height]) | |
| .scale(projection.scale() * tau) | |
| .translate(projection([0, 0])) | |
| (); | |
| svg.selectAll("image") | |
| .data(tiles) | |
| .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] + tiles.translate[0]) * tiles.scale; }) | |
| .attr("y", function(d) { return (d[1] + tiles.translate[1]) * tiles.scale; }) | |
| .attr("width", tiles.scale) | |
| .attr("height", tiles.scale); | |
| }); | |
| //QUAKES | |
| var data; // declare a global variable | |
| var svg1 = d3.select("body").append("svg1") | |
| .attr("width", width) | |
| .attr("height", height) | |
| .on("mousemove", mousemoved); | |
| var layer1 = svg1.append("g"); | |
| var layer2 = svg1.append("g"); | |
| var info = d3.select("body").append("div") | |
| .attr("class", "info"); | |
| // NEW: Title | |
| svg1.append('text') | |
| .attr('x', width / 2) | |
| .attr('y', "1.5em") | |
| .style('font-size', '1.5em') | |
| .style('text-anchor', 'middle') | |
| .text('Earthquakes in the last week') | |
| // NEW: Create a color scale for the earthquakes | |
| var color = d3.scaleOrdinal(d3.schemeCategory10); | |
| // Add a legend | |
| var legend = layer2.selectAll('.legend') | |
| .data(d3.range(10)) | |
| .enter().append('g') | |
| .attr('class', 'legend') | |
| .attr('transform', 'translate(' + [width - 150, height / 2] +')'); | |
| legend.append('circle') | |
| .attr('cy', function(d) { return 4 * d * path.pointRadius() ; }) | |
| .attr('r', path.pointRadius()) | |
| .attr('fill', color) | |
| .attr('stroke', '#aaaaaa') | |
| legend.append('text') | |
| .attr('x', '1em') | |
| .attr('y', function(d) { return 4 * d * path.pointRadius(); }) | |
| .attr('dy', '.3em') | |
| .text(function(d) { return d + ' - ' + (d + 1); }) | |
| var usgs = "https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/all_week.geojson"; | |
| var url = "https://umbcvis.github.io/classes/class-03/us.json" | |
| d3.json(url, plotStates); | |
| d3.json(usgs, plotQuakes); | |
| function plotStates(error, json) { | |
| if (error) throw error; | |
| json = json.objects.us.geometries.map(function(d) { return topojson.feature(json, d); }) | |
| layer1.selectAll("path") | |
| .data(json) | |
| .enter() | |
| .append("path") | |
| .attr("d", path); | |
| } | |
| // NEW: Various updates for magnitude-dependent labels and colors | |
| function plotQuakes(error, json) { | |
| if (error) throw error; | |
| var features = json.features.filter(inRange); // Only those in the viewport | |
| var mags = features.map(function(d) { return d.properties.mag }); | |
| var largest = d3.max(mags); | |
| layer2.selectAll("path.quake") | |
| .data(features) | |
| .enter().append("path") | |
| .attr("class", "quake") | |
| .style("fill", magColor) | |
| .attr("d", path) | |
| // Remove unnecessary legend elements | |
| legend.filter(function(d) { return d > largest; }).remove(); | |
| // Update the legend labels to indicate # of earthquakes in range | |
| legend.select('text') | |
| .text(function(value) { return value + ' - ' + (value + 1) + " (" + | |
| mags.filter(function(d) { return d >= value && d < value + 1; }).length + ")"; | |
| }); | |
| } | |
| // projection returns null for [lon, lat] that won't appear in the viewport | |
| function inRange(d) { | |
| return projection(d.geometry.coordinates) !== null; | |
| } | |
| // NEW: Return magnitude-dependent color | |
| function magColor(d) { | |
| return color(Math.floor(d.properties.mag)); | |
| } | |
| 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> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment