D3.js Map with Spain data file loaded from TopoJSON-Data Collection on GitHub
D3v4 and zoomed to country on Mercator Projection
Forked from the Simple D3 Map and D3v4 Zoomed to Country
Created
March 4, 2018 04:06
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Map of Spain with GitHub TopoJSON
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| license: mit |
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| body { margin:0;position:fixed;top:0;right:0;bottom:0;left:0; } | |
| svg { width:100%; height: 100% } | |
| </style> | |
| <body> | |
| <script src="https://unpkg.com/d3@4"></script> | |
| <script src="https://unpkg.com/topojson-client@3"></script> | |
| <script> | |
| var width = 900; | |
| var height = 500; | |
| var svg = d3.select("body").append("svg"); | |
| var projection = d3.geoMercator(); | |
| projection.scale(1).translate([0, 0]); | |
| var path = d3.geoPath().projection(projection); | |
| d3.json("https://raw.githubusercontent.com/piwodlaiwo/TopoJSON-Data/master/diva-gis/ESP_adm/ESP_adm1.topo.json", function(error, topo) { | |
| if (error) throw error; | |
| var spain = topojson.feature(topo, topo.objects.states); | |
| var spain_features = spain.features; | |
| //Find Spain bounds relative to height and width | |
| var b = path.bounds(spain), | |
| s = .95 / Math.max((b[1][0] - b[0][0]) / width, (b[1][1] - b[0][1]) / height), | |
| t = [(width - s * (b[1][0] + b[0][0])) / 2, (height - s * (b[1][1] + b[0][1])) / 2]; | |
| //zoom to Spain from World Mercator Projection | |
| projection.scale(s).translate(t); | |
| svg.selectAll("path") | |
| .data(spain_features) | |
| .enter().append("path") | |
| .attr("d", path); | |
| }); | |
| </script> |
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