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D3 - Updating Data
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| { | |
| "nodes" : [ | |
| {"name":"test","1990":20, "1991":22, "1992":19}, | |
| {"name":"test2","1990":10, "1991":12, "1992":16}, | |
| {"name":"test3","1990":6, "1991":22, "1992":30} | |
| ] | |
| } |
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>D3 - Updating Data</title></title> | |
| <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script> | |
| <style type="text/css"> | |
| body { | |
| padding: 32px; | |
| } | |
| /* vis */ | |
| svg circle { | |
| fill: #5394b7; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <input id="rangeSelector" type="range" min="1990" max="1992" value="1990" onChange="update();"> | |
| <p>Current Year : <span id="year">1990</span></p> | |
| <svg width="900" height="700" id="visualisation"></svg> | |
| <script> | |
| var nodes = false, | |
| pack = false, | |
| year = 1990; | |
| d3.json('data.json', function(error, root) { | |
| nodes = d3 | |
| .select('#visualisation') | |
| .selectAll('circle') | |
| .data(root.nodes) | |
| .enter() | |
| .append('circle') | |
| .attr('cy', 60) | |
| .attr('cx', function(d, i) {return (i+1) * 80}) | |
| .attr('r', function(d) {return d[year]; }); | |
| }); | |
| function update() { | |
| year = document.getElementById('rangeSelector').value; | |
| document.getElementById('year').innerHTML = year; | |
| nodes | |
| .transition() | |
| .attr('r', function(d) {return d[year];}); | |
| } | |
| </script> | |
| </body> | |
| </html> |
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