Yuichi Yazaki 作の日本の topojson。 各 feature の中点に、県名を示すラベルを表示した。
使用しているデータのリポジトリ: https://github.com/dataofjapan/land
データの出典元：地球地図日本
Last active
February 6, 2016 10:07
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japan.topojson with labels
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| <!DOCTYPE html> | |
| <meta charset='utf-8'> | |
| <script src='https://d3js.org/d3.v3.min.js'></script> | |
| <script src='https://d3js.org/topojson.v1.min.js'></script> | |
| <body> | |
| <div id='map_canvas' style='position:absolute'></div> | |
| <script> | |
| var map={}; | |
| map.width = 960; | |
| map.height = 500; | |
| map.scale = 862.5420350331074; | |
| map.translate = [-1607.5029017610468, 824.1369223542354]; | |
| map.zoom = d3.behavior.zoom(); | |
| map.zoomed = function() | |
| { | |
| map.translate = map.zoom.translate(); | |
| map.scale = map.zoom.scale(); | |
| map.draw(); | |
| } | |
| map.zoom.on('zoom',map.zoomed); | |
| map.zoom.translate(map.translate); | |
| map.zoom.scale(map.scale); | |
| map.canvas = d3.select('#map_canvas') | |
| .append('svg') | |
| .attr('width', map.width) | |
| .attr('height',map.height) | |
| .call(map.zoom); | |
| map.draw = function() | |
| { | |
| map.projection.scale(map.scale); | |
| map.projection.translate(map.translate); | |
| map.canvas.selectAll('path') | |
| .attr('d',map.path); | |
| map.prefectures.forEach(function(d) | |
| { | |
| d.centroid = map.path.centroid(d); | |
| }); | |
| map.canvas.selectAll('text') | |
| .style('font-size', (map.scale*0.004)) | |
| .attr('x', function(d){return d.centroid[0];}) | |
| .attr('y', function(d){return d.centroid[1];}); | |
| } | |
| d3.json('/osoken/raw/b8e5859295757bb2ec5b/japan.topojson',function(error,data) | |
| { | |
| if (error) | |
| { | |
| console.log(error); | |
| return; | |
| } | |
| map.canvas.append('rect') | |
| .attr('x',0).attr('y',0).attr('height',map.height).attr('width',map.width).attr('fill','#F8F8F8'); | |
| map.prefectures = topojson.feature(data, data.objects.japan).features; | |
| map.projection = d3.geo.mercator() | |
| .scale(map.scale) | |
| .translate(map.translate); | |
| map.path = d3.geo.path().projection(map.projection); | |
| map.prefectures.forEach(function(d) | |
| { | |
| d.centroid = map.path.centroid(d); | |
| }); | |
| map.layer = map.canvas.append('g') | |
| .attr('class', 'prefectures'); | |
| map.layer.selectAll('path') | |
| .data(map.prefectures) | |
| .enter().append('path') | |
| .style('fill', '#ccc') | |
| .style('stroke', '#888') | |
| .style('stroke-width', '1.2px') | |
| .attr('d', map.path); | |
| map.layer.selectAll('text') | |
| .data(map.prefectures) | |
| .enter().append('text') | |
| .attr('x', function(d){return d.centroid[0];}) | |
| .attr('y', function(d){return d.centroid[1];}) | |
| .attr('text-anchor', 'middle') | |
| .style('font-family', 'sans-serif') | |
| .style('font-size', (map.scale*0.004)) | |
| .text(function(d){return d.properties.nam_ja;}); | |
| map.draw(); | |
| }); | |
| </script> |
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