Data join with array of objects.
From D3 in Depth book by Peter Cook.
Last active
August 2, 2017 10:26
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Data join with array of objects
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| license: gpl-3.0 | |
| height: 170 | |
| border: no |
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"> | |
| <head> | |
| <title>Data join with array of objects</title> | |
| </head> | |
| <style> | |
| circle { | |
| fill: #ddd; | |
| } | |
| </style> | |
| <body> | |
| <svg width="760" height="140"> | |
| <g transform="translate(70, 70)"> | |
| <circle /> | |
| <circle /> | |
| <circle /> | |
| <circle /> | |
| <circle /> | |
| </g> | |
| </svg> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/4.2.2/d3.min.js"></script> | |
| <script> | |
| var cities = [ | |
| { name: 'London', population: 8674000}, | |
| { name: 'New York', population: 8406000}, | |
| { name: 'Sydney', population: 4293000}, | |
| { name: 'Paris', population: 2244000}, | |
| { name: 'Beijing', population: 11510000} | |
| ]; | |
| var s = d3.selectAll('circle'); | |
| s.data(cities); | |
| s.attr('r', function(d) { | |
| var scaleFactor = 0.000005; | |
| return d.population * scaleFactor; | |
| }) | |
| .attr('cx', function(d, i) { | |
| return i * 120; | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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