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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <style> | |
| path { | |
| fill: steelblue; | |
| opacity: 0.9; | |
| } | |
| circle { | |
| display: none; | |
| fill: steelblue; | |
| opacity: 0.5; | |
| } | |
| svg:hover circle { | |
| display: inline; | |
| } | |
| </style> | |
| <body> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/d3/3.5.6/d3.min.js"></script> | |
| <script> | |
| var gemspaths; | |
| var width = 960, | |
| height = 500; | |
| var xym = d3.geo.mercator(); | |
| var translate = xym.translate(); | |
| translate[0] = -420; | |
| translate[1] = 4790; | |
| xym.translate(translate).scale(5400); | |
| var path = d3.geo.path().projection(xym); | |
| var line = d3.svg.line() | |
| .x(function(d) {return d[0] * x;}) | |
| .y(function(d) {return -d[1] * x;}) | |
| .interpolate("linear"); | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height); | |
| d3.json("https://dl.dropboxusercontent.com/s/32jz23x36x7ocnq/nlwgs.geojson?dl=1", function(error, _data) { | |
| if (error) throw error; | |
| nodes = []; | |
| _data.features.forEach(function(d) { | |
| nodes.push({ | |
| radius : 1, | |
| type : d.type, | |
| properties : d.properties, | |
| geometry : d.geometry | |
| }) | |
| }); | |
| var force = d3.layout.force() | |
| .gravity(-0.01) | |
| .chargeDistance(-30) | |
| .nodes(nodes) | |
| .size([width, height]); | |
| force.start(); | |
| gems = svg.selectAll("g") | |
| .data(nodes) | |
| .enter().append("g") | |
| .call(force.drag); | |
| circs = gems.append("circle") | |
| .attr("r", 0); | |
| gemspaths = gems.append("path") | |
| .attr("d", function(d) {return path(d.geometry);}) | |
| .classed("gemeente", true) | |
| .attr("id", function(d) {return "g" + d.properties.GEMNR}) | |
| .attr("transform", function(d) { | |
| dx = -path.centroid(d)[0]; | |
| dy = -path.centroid(d)[1]; | |
| d.radius = getR(path.bounds(d)) / 2; | |
| circs.attr('r', function(d) {return d.radius}); | |
| return "scale(1.2) translate(" + dx + ", " + dy + ")" | |
| }); | |
| force.on("tick", function(e) { | |
| var q = d3.geom.quadtree(nodes), i = 0, n = nodes.length; | |
| while (++i < n) | |
| q.visit(collide(nodes[i])); | |
| svg.selectAll("g") | |
| .attr("transform", function(d) { | |
| d.x = Math.max(d.radius + 8, Math.min(width - d.radius - 8, d.x)); | |
| d.y = Math.max(d.radius + 8, Math.min(height - d.radius - 8, d.y)); | |
| return "translate(" + d.x + "," + d.y + ")"; | |
| }); | |
| }); | |
| }) | |
| function collide(node) { | |
| var r = node.radius + 16, | |
| nx1 = node.x - r, | |
| nx2 = node.x + r, | |
| ny1 = node.y - r, | |
| ny2 = node.y + r; | |
| return function(quad, x1, y1, x2, y2) { | |
| if (quad.point && (quad.point !== node)) { | |
| var x = node.x - quad.point.x, | |
| y = node.y - quad.point.y, | |
| l = Math.sqrt(x * x + y * y), | |
| r = node.radius + 16 + quad.point.radius; | |
| if (l < r) { | |
| l = (l - r) / l * .5; | |
| node.x -= x *= l; | |
| node.y -= y *= l; | |
| quad.point.x += x; | |
| quad.point.y += y; | |
| } | |
| } | |
| return x1 > nx2 || x2 < nx1 || y1 > ny2 || y2 < ny1; | |
| }; | |
| } | |
| function getR(array) { | |
| return d3.max([array[1][0] - array[0][0], array[1][1] - array[0][1]]); | |
| } | |
| </script> |
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