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| id | type | amount | |
|---|---|---|---|
| 01 | Restaurant | 100 | |
| 02 | Entertainment | 100 | |
| 03 | Rent | 200 | |
| 04 | Groceries | 250 |
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <head> | |
| <script> | |
| if ('registerElement' in document && | |
| 'createShadowRoot' in HTMLElement.prototype && | |
| 'import' in document.createElement('link') && | |
| 'import' in document.createElement('link')) console.log('Woohoo! Browser has native WC support!'); | |
| else document.write('<script src="//cdnjs.cloudflare.com/ajax/libs/webcomponentsjs/0.5.0/webcomponents.min.js"><\/script>'); | |
| </script> | |
| <script src="//cdnjs.cloudflare.com/ajax/libs/polymer/0.5.0/polymer.js"></script> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <link rel="import" href="pie-chart.html"> | |
| </head> | |
| <body> | |
| <pie-chart | |
| url="data.csv"></pie-chart> | |
| </body> |
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| <polymer-element name="pie-chart" attributes="url"> | |
| <template> | |
| <style> | |
| :host { | |
| display: block; | |
| height: 400px; | |
| } | |
| text { | |
| fill: white; | |
| } | |
| .controls { | |
| display: inline-block; | |
| margin: 0 0 0 20px; | |
| } | |
| svg { | |
| float: right; | |
| margin: 0 20px 0 0; | |
| } | |
| .arc path { | |
| stroke: #fff; | |
| } | |
| </style> | |
| <div class="controls"> | |
| <template repeat="{{d in data}}"> | |
| <p><label for="input">{{d.type}}: </label> | |
| <input id="input" | |
| type="range" | |
| value="{{d.amount}}" | |
| min="0" max="500" | |
| on-input="{{refreshChart}}"> ${{d.amount}}</p> | |
| </template> | |
| </div> | |
| <svg id="svg"></svg> | |
| </template> | |
| <script> | |
| Polymer({ | |
| createElements: function () { | |
| var width = 500, | |
| height = 500, | |
| radius = Math.min(width, height) / 2; | |
| this.color = d3.scale.ordinal() | |
| .range(["green", "orange", "blue", "red"]); | |
| this.arc = d3.svg.arc() | |
| .outerRadius(radius - 10) | |
| .innerRadius(0); | |
| this.pie = d3.layout.pie() | |
| .sort(null) | |
| .value(function(d) { return d.amount; }); | |
| this.svg = d3.select(this.$.svg) | |
| .attr("width", width) | |
| .attr("height", height) | |
| .append("g") | |
| .attr("transform", "translate(" + width / 2 + "," + height / 2 + ")"); | |
| }, | |
| drawChart: function () { | |
| var me = this; | |
| me.data.forEach(function(d) { | |
| d.amount = +d.amount; | |
| }); | |
| me.g = me.svg.selectAll(".arc") | |
| .data(me.pie(me.data)) | |
| .enter().append("g") | |
| .attr("class", "arc"); | |
| me.g.append("path") | |
| .attr("d", me.arc) | |
| .style("fill", function(d) { return me.color(d.data.type); }); | |
| me.g.append("text") | |
| .attr("transform", function(d) { return "translate(" + me.arc.centroid(d) + ")"; }) | |
| .attr("dy", ".35em") | |
| .style("text-anchor", "middle") | |
| .text(function(d) { return d.data.type; }); | |
| }, | |
| refreshChart: function () { | |
| var me = this; | |
| me.g.data(me.pie(me.data)) | |
| .select("path").attr("d", me.arc); | |
| me.g.select("text") | |
| .attr("transform", function(d) { return "translate(" + me.arc.centroid(d) + ")"; }); | |
| }, | |
| getData: function () { | |
| var me = this; | |
| d3.csv(me.url, function (error, data) { | |
| me.data = data; | |
| me.drawChart(); | |
| }); | |
| }, | |
| domReady: function () { | |
| this.createElements(); | |
| this.getData(); | |
| }, | |
| urlChanged: function (oldValue, newValue) { | |
| if(newValue && oldValue) { | |
| this.getData(); | |
| } | |
| } | |
| }); | |
| </script> | |
| </polymer-element> |
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