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| license: mit |
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| canvas, svg { | |
| position: absolute; | |
| top: 0 | |
| left: 0; | |
| } | |
| svg { | |
| z-index: 10; | |
| } | |
| .axis-grid line { | |
| stroke: #ffffff; | |
| stroke-width: 2; | |
| } | |
| </style> | |
| <body> | |
| <svg width="900" height="600"></svg> | |
| <script src="//d3js.org/d3.v4.js"></script> | |
| <script> | |
| d3.csv("sankey.csv", function(rows) { | |
| console.log(rows); | |
| var parents = []; | |
| rows.forEach(function(row) { | |
| // if we don't have this parent yet, add a blank node | |
| if (parents[row.target] === undefined) { | |
| parents[row.target] = {level: row.target, children: []}; | |
| } | |
| parents[row.target].children.push({value: row.source}); | |
| }); | |
| for (var i = parents.length - 1; i > 1; i--) { | |
| parents[i].children.push(parents[i-1]); | |
| } | |
| // var root = parents[parents.length - 1]; | |
| // console.log(parents[parents.length - 1]); | |
| // console.log(JSON.stringify(parents[parents.length-1])); | |
| // remove undefined items | |
| parents = parents.filter(function(d) { return true; }); | |
| var svg = d3.select('svg').append('g') | |
| .attr('transform', 'translate(20,20)'); | |
| var width = 600; | |
| var categoryBands = d3.scaleBand() | |
| .range([0, width - -130]) | |
| .domain(parents.map(function(d) { return d.level; })); | |
| var headers = svg.append('g') | |
| .attr('class', 'headers'); | |
| var level = headers.selectAll("g.level") | |
| .data(parents) | |
| .enter().append('g') | |
| .attr('class', 'level') | |
| .attr('transform', | |
| function(d,i) { return 'translate(' + categoryBands(d.level) + ',0)'; }); | |
| level.append('text') | |
| // .attr('x', categoryBands.bandwidth() / 2) | |
| .attr('text-anchor', 'middle') | |
| .text(function(d) { return d.level; }); | |
| var items = level.selectAll('g.item').data(function(d) { return d.children; }) | |
| .enter().append('g') | |
| .attr('class', 'item') | |
| .attr('transform', function(d, i) { return 'translate(0, ' + ((i+1) * 20) + ')'; }) | |
| items.append('text') | |
| .text(function(d) { return d.value; }); | |
| }); | |
| // bar.attr('width', function(d) { return x(d); }); | |
| </script> |
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| source | target | value | |
|---|---|---|---|
| omelet | 1 | 2 | |
| tostada | 1 | 2 | |
| burrito | 1 | 2 | |
| hummus | 2 | 2 | |
| fondue | 3 | 2 | |
| sugar | 4 | 2 | |
| lemonade | 5 | 2 | |
| screwdriver | 6 | 2 | |
| champagne | 6 | 2 | |
| martini | 7 | 2 | |
| egg yolk | 8 | 2 |
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