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Small multiple maps
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| <html> | |
| <head> | |
| <title>small multiple maps</title> | |
| <style type="text/css"> | |
| body{ | |
| font-family: sans-serif; | |
| } | |
| .map{ | |
| display: inline-block; | |
| text-align: center; } | |
| path{ | |
| stroke-width:1; } | |
| .yet-to-vote{ | |
| fill:none; | |
| stroke:#666; | |
| stroke-width:0.1; } | |
| .voted{ | |
| fill:#666; | |
| stroke:#666;} | |
| .voting{ | |
| fill:#FF2600; | |
| stroke:#FF2600;} | |
| .none{ | |
| fill:none; | |
| stroke:none; } | |
| </style> | |
| <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script> | |
| </head> | |
| <body> | |
| <div id="maps"></div> | |
| </body> | |
| <script type="text/javascript"> | |
| var currentDate = '2014-2-10'; | |
| var mapWidth = 200; | |
| var mapHeight = 120; | |
| var projection = d3.geo.albersUsa() | |
| .scale(220) | |
| .translate([mapWidth / 2, mapHeight / 2]); | |
| var path = d3.geo.path() | |
| .projection(projection); | |
| var dateFormat = d3.time.format("%B %e"); | |
| d3.json("map.geojson", function(error, map) { | |
| var dates_o = {}; | |
| map.features.forEach(function(d,i){ | |
| if(!dates_o[d.properties.date]){ | |
| dates_o[d.properties.date] = true; | |
| } | |
| }); | |
| var dates = Object.keys(dates_o); | |
| console.log(dates); | |
| //draw a map for each date | |
| var dateJoin = d3.select('#maps').selectAll('div.map') | |
| .data(dates); | |
| var divs = dateJoin.enter() | |
| .append('div').attr({ | |
| 'id':function(d){ return 'map_'+d; }, | |
| 'class':'map' | |
| }) | |
| divs.append('p').text(function(d){ return dateFormat(new Date(d)); }) | |
| var SVGs = divs.append('svg').attr({ | |
| 'width':mapWidth, | |
| 'height':mapHeight | |
| }); | |
| SVGs.each(function(date){ | |
| d3.select(this).selectAll('path') | |
| .data(map.features) | |
| .enter().append("path") | |
| .attr({ | |
| "d":path, | |
| "id":function(d){ | |
| return d.properties.name + date; | |
| } | |
| }); | |
| }); | |
| function update(){ | |
| SVGs.each(function(date){ | |
| var now = new Date(date); | |
| d3.select(this).selectAll('path') | |
| .data(map.features) | |
| .attr({ | |
| "class":function(d,i){ | |
| if(d.properties.date){ | |
| var stateDate = new Date(d.properties.date); | |
| if(stateDate > now){ | |
| return 'yet-to-vote'; | |
| }else if(stateDate < now){ | |
| return 'voted'; | |
| } | |
| return 'voting'; | |
| } | |
| return 'none'; | |
| } | |
| }); | |
| }) | |
| } | |
| update(); | |
| }); | |
| </script> | |
| </html> |
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