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Superimposed maps
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| <!DOCTYPE html> | |
| <!--[if lt IE 7]> <html class="no-js lt-ie9 lt-ie8 lt-ie7"> <![endif]--> | |
| <!--[if IE 7]> <html class="no-js lt-ie9 lt-ie8"> <![endif]--> | |
| <!--[if IE 8]> <html class="no-js lt-ie9"> <![endif]--> | |
| <!--[if gt IE 8]><!--> <html class="no-js"> <!--<![endif]--> | |
| <head> | |
| <meta charset="utf-8"> | |
| <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1"> | |
| <title></title> | |
| <meta name="description" content=""> | |
| <meta name="viewport" content="width=device-width"> | |
| <link rel="stylesheet" href="map.css"> | |
| <script src="http://d3js.org/d3.v3.min.js" charset="utf-8"></script> | |
| </head> | |
| <body> | |
| <script src="map.js"></script> | |
| </body> | |
| </html> |
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| #map, #externalSvg { | |
| position: absolute; | |
| left: 200px; | |
| } | |
| .subunit-label { | |
| fill: #777; | |
| fill-opacity: .5; | |
| font-size: 14px; | |
| font-weight: 300; | |
| text-anchor: middle; | |
| } | |
| .subunit-boundary { | |
| fill: none; | |
| stroke: #777; | |
| stroke-dasharray: 2,2; | |
| stroke-linejoin: round; | |
| } |
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| var width = 960; | |
| var mapHeight = 440; | |
| var projection = d3.geo.equirectangular() | |
| .scale((width + 1) / 2 / Math.PI) | |
| .precision(.01); | |
| var drag = d3.behavior.drag() | |
| .origin(function(d) { return d; }) | |
| .on("dragstart", dragstarted) | |
| .on("drag", dragmove); | |
| var zoom = d3.behavior.zoom() | |
| .scaleExtent([0.01, 10]) | |
| .on("zoom", zoomed); | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", mapHeight) | |
| .attr("id", "map"); | |
| showMap("background", "ne_110m_coastline.json"); | |
| d3.xml("German_Empire_1914.svg", "image/svg+xml", function(xml) { | |
| svgMap = d3.select( | |
| svg | |
| .append("g") | |
| .call(drag) | |
| .call(zoom) | |
| .node() | |
| .appendChild(document.importNode(xml.documentElement, true))) | |
| .attr("name", "German_Empire_1914") | |
| .attr("id", "externalSvg") | |
| .classed("externalSvg", true) | |
| .datum({key: 1}); | |
| }); | |
| function showMap(id, filePath) { | |
| d3.json(filePath, function(error, world) { | |
| var path = d3.geo.path() | |
| .projection(projection); | |
| svg.append("g") | |
| .attr("id", id) | |
| .selectAll(".subunit") | |
| .data(world.features) | |
| .enter().append("path") | |
| .attr("class", function(d) { | |
| return "subunit-boundary subunit " + d.properties.adm0_a3; | |
| }) | |
| .attr("d", path); | |
| }); | |
| } | |
| function dragstarted(d) { | |
| d3.event.sourceEvent.stopPropagation(); | |
| } | |
| function dragmove(d) { | |
| d.x = d3.event.x; | |
| d.y = d3.event.y; | |
| var x=d.x || 0; | |
| var y=d.y || 0; | |
| d3.select(this) | |
| .attr("transform", "translate("+x+" "+y+")"); | |
| } | |
| function zoomed() { | |
| d3.select(this).attr("transform", "translate(" + d3.event.translate + ")scale(" + d3.event.scale + ")"); | |
| } |
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