Last active
September 30, 2015 20:38
-
-
Save geoatlantic/85a2c8083e9808eebeb0 to your computer and use it in GitHub Desktop.
Homework #5
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"> | |
| <style> | |
| .chart rect { | |
| fill: seagreen; | |
| } | |
| .axis path, | |
| .axis line { | |
| fill: none; | |
| stroke: #000; | |
| shape-rendering: crispEdges; | |
| } | |
| .axis text { | |
| font: 10px sans-serif; | |
| } | |
| .bar:hover { | |
| fill: orangered ; | |
| } | |
| .chart text { | |
| font: 12px sans-serif; | |
| } | |
| </style> | |
| <svg class = "chart"></svg> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script src="http://labratrevenge.com/d3-tip/javascripts/d3.tip.v0.6.3.js"></script> | |
| <script> | |
| var quakes; //global variable | |
| var url = "http://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/all_day.geojson"; | |
| var margin = {top: 20, right: 30, bottom: 30, left: 40}, | |
| width = 960 - margin.left - margin.right, | |
| height = 500 - margin.top - margin.bottom; | |
| var x = d3.scale.linear() | |
| .range([0, width]); | |
| var y = d3.scale.linear() | |
| .range([height, 0]); | |
| var xAxis = d3.svg.axis() | |
| .scale(x) | |
| .tickValues ([1, 2, 3, 4, 5, 6, 7, 8, 9, 10]) | |
| .orient("bottom"); | |
| var yAxis = d3.svg.axis() | |
| .scale(y) | |
| .orient("left") | |
| /*var tip = d3.tip() | |
| .attr('class', 'd3-tip') | |
| .offset([-10, 0]) | |
| .html(function(d) { | |
| return "<strong>Frequency:</strong> <span style='color:red'>" + d.frequency + "</span>"; | |
| })*/ | |
| var chart = d3.select(".chart") //.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 + ")"); | |
| //svg.call(tip); | |
| d3.json(url, function(error, data) { | |
| if (error) console.log(error); | |
| console.log("Data from USGS:", data); | |
| quakes = data | |
| quakesMag = []; | |
| quakesMag = data.features.map(function(d) { return d.properties.mag; }); | |
| console.log("Earthquake Magnitude:", quakesMag); | |
| quakesBin = []; // empty array to bin the mag values | |
| for (var i = 0; i < 10; i++) { | |
| quakesBin[i] = quakesMag.filter(function(d) { return d >= i && d < i + 1;}).length; | |
| } | |
| x.domain([0, quakesBin.length]); | |
| y.domain(d3.extent(quakesBin)); | |
| var barWith = width / quakesMag.length; | |
| chart.append("g") | |
| .attr("class", "x axis") | |
| .attr("transform", "translate(0," + height + ")") | |
| .call(xAxis); | |
| chart.append("g") | |
| .attr("class", "y axis") | |
| .call(yAxis); | |
| chart.append("text") // append for y axis label | |
| .attr("transform", "rotate(-90)") | |
| .attr("x", -height/2) | |
| .attr("y", -1 - margin.left/3) | |
| .attr("dy", "-1.2em") | |
| .attr("text-anchor", "middle") | |
| .text("Earthquake Frequency"); | |
| chart.append("text") // append for x axis label | |
| .attr("text-anchor", "end") | |
| .attr("x", width/1.75) | |
| .attr("y", height + 2*margin.bottom/3 + 9) | |
| .text("Earthquake Magnitude"); | |
| chart.append("text") // append title | |
| .attr("text-anchor", "middle") | |
| .attr("x", width/2) | |
| .attr("y", -margin.top/2) | |
| .attr("dy", ".5em") | |
| .text("Earthquake Occurences - Last 24 Hours"); | |
| chart.selectAll("rect") | |
| .data(quakesBin) | |
| .enter().append("rect") | |
| .attr("x", function(d, i) { return x(i); }) | |
| .attr("y", function(d) { return y(d); }) | |
| .attr("height", function(d) { return height - y(d); }) | |
| .attr("width", barWith) | |
| }); | |
| </script> |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment