IEX API
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March 25, 2017 00:16
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IEX Market - Force-Directed
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| license: mit |
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| body { font-family: sans-serif; } | |
| </style> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script src="jsonp.js"></script> | |
| <body align=center><div class=dropdown></div><br> | |
| <script> | |
| d3.jsonp("https://api.iextrading.com/1.0/market?callback=visualise"); | |
| function visualise(data){ | |
| data.forEach(function(d) { | |
| d.name = d.venueName; | |
| d.marketPercent = (d.marketPercent *100).toFixed(1); | |
| //d.value = rscale(d); | |
| console.log(d.value) | |
| //console.log("Spent $" + d.amount + " on " + d.date); | |
| }); | |
| var option = ["volume", "marketPercent", "tapeA", "tapeB", "tapeC"] | |
| var key = option[0] | |
| var select = d3.select('.dropdown') | |
| .append('select') | |
| .style('font-size', '20px') | |
| .attr('class','select') | |
| .on('change',onchange); | |
| var options = select | |
| .selectAll('option') | |
| .data(option).enter() | |
| .append('option') | |
| .text(function (d) { return d; }); | |
| function onchange() { | |
| updateviz(d3.select('select').property('value')) | |
| }; | |
| function updateviz(key) { | |
| d3.select("svg").remove(); | |
| var format = d3.time.format("%Y-%m-%d"), | |
| margin = {top: 20, right: 20, bottom: 30, left: 40}, | |
| width = 960 - margin.left - margin.right, | |
| height = 450 - margin.top - margin.bottom; | |
| var force = d3.layout.force() | |
| .gravity(.003) | |
| .size([width, height]); | |
| var format = d3.format(",") | |
| var circs = [] | |
| data.forEach(function(d){ circs.push(d[key])}) | |
| color = d3.scale.ordinal().domain(data.map(function(d) { | |
| return d.name; | |
| })).range(["#1b9e77", "#a04a2b", "#9467bd", "#4a4685", "#e7298a", "#66a61e", | |
| "#02aee3", "#a6761d", "#666666","#d96d02", "#026bd4","#c803d2", | |
| "#c20346"]); | |
| var rscale = d3.scale.linear() | |
| .domain([0,d3.sum(circs)]) | |
| .range([1,400]) | |
| var svg = d3.select("body") | |
| .append("svg") | |
| .style('background','black') | |
| .attr("width", width + margin.left + margin.right) | |
| .attr("height", height + margin.top + margin.bottom) | |
| .append("g") | |
| .attr("transform", "translate(" + margin.left + "," + margin.top + ")"); | |
| force | |
| .nodes(data) | |
| .start(); | |
| var node = svg.selectAll("g.node") | |
| .data(data) | |
| .enter() | |
| .append("g") | |
| .attr("class", "node") | |
| .call(force.drag); | |
| node.append("circle") | |
| .attr("r", function(d) { return rscale(d[key]) }) | |
| .attr("opacity", .67) | |
| .attr("fill", function(d,i){return color(i)}); | |
| node.append("text") | |
| .text(function(d){ return d.name.toString(); }) | |
| .attr("text-anchor", "middle") | |
| .attr('fill', '#fff') | |
| .attr('font-size', 15) | |
| .attr('dy', -5); | |
| node.append("text") | |
| .text(function(d){return format(d[key]); }) | |
| .attr("text-anchor", "middle") | |
| .attr('fill', '#fff') | |
| .attr('font-size', 15) | |
| .attr('dy', 15); | |
| force.on("tick", function() { | |
| node.attr('transform', function(d) { | |
| return 'translate('+ Math.max(20, Math.min(width-20, d.x)) + ',' + Math.max(20, Math.min(height-20, d.y)) + ')'; | |
| }); | |
| }); | |
| } | |
| updateviz(key) | |
| } | |
| </script> | |
| </body> |
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| d3.jsonp = function (url, callback) { | |
| function rand() { | |
| var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz', | |
| c = '', i = -1; | |
| while (++i < 15) c += chars.charAt(Math.floor(Math.random() * 52)); | |
| return c; | |
| } | |
| function create(url) { | |
| var e = url.match(/callback=d3.jsonp.(\w+)/), | |
| c = e ? e[1] : rand(); | |
| d3.jsonp[c] = function(data) { | |
| callback(data); | |
| delete d3.jsonp[c]; | |
| script.remove(); | |
| }; | |
| return 'd3.jsonp.' + c; | |
| } | |
| var cb = create(url), | |
| script = d3.select('head') | |
| .append('script') | |
| .attr('type', 'text/javascript') | |
| .attr('src', url.replace(/(\{|%7B)callback(\{|%7D)/, cb)); | |
| }; |
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