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TopoJSON with Random Gaussian Blurs (counties)
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| license: gpl-3.0 | |
| height: 600 | |
| 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.
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8"> | |
| <meta name="viewport" content="width=device-width,initial-scale=1,maximum-scale=1,user-scalable=no" /> | |
| <style> | |
| body { | |
| background-color: black; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <svg width="960" height="600" stroke-linejoin="round" stroke-linecap="round"> | |
| <defs></defs> | |
| </svg> | |
| <script src="https://d3js.org/d3.v4.min.js"></script> | |
| <script src="https://unpkg.com/topojson-client@3.0.0"></script> | |
| <script> | |
| var svg = d3.select('svg'); | |
| var defs = svg.select('defs'); | |
| var path = d3.geoPath(); | |
| d3.json('https://unpkg.com/us-atlas@1/us/10m.json', function(error, us) { | |
| if (error) { | |
| throw error; | |
| } | |
| var geoJsonFeatureCollection = topojson.feature(us, us.objects.counties); | |
| defs.selectAll('filter') | |
| .data(geoJsonFeatureCollection.features) | |
| .enter().append('filter') | |
| .attr('id', function(d) { | |
| return 'blur_' + d.id; | |
| }) | |
| .append('feGaussianBlur') | |
| .attr('stdDeviation', d3.randomUniform(0.5, 5)); | |
| svg.selectAll('path') | |
| .data(geoJsonFeatureCollection.features) | |
| .enter().append('path') | |
| .attr('d', path) | |
| .style('fill', 'transparent') | |
| .style('stroke', 'steelblue') | |
| .style('stroke-width', 0.5) | |
| .style('filter', function(d) { | |
| return 'url(#blur_' + d.id + ')'; | |
| }) | |
| .on('mouseover', function(d) { | |
| d3.select(this) | |
| .style('stroke-width', 2) | |
| .style('filter', '') | |
| .raise(); | |
| }) | |
| .on('mouseout', function(d) { | |
| d3.select(this) | |
| .transition() | |
| .delay(150) | |
| .style('stroke-width', 0.5) | |
| .style('filter', 'url(#blur_' + d.id + ')'); | |
| }); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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