Using d3.js and TopoJson to draw a zoomable map of Tunisia. Done by Mohamed Ali Jamaoui. To know more about Tunisia check this Wiki http://en.wikipedia.org/wiki/Tunisia
Last active
September 30, 2015 02:16
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d3.js and topoJson zoomable map of Tunisia
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| <!DOCTYPE html> | |
| <meta charset="utf-8"> | |
| <head> | |
| <style> | |
| .background { | |
| fill: none; | |
| pointer-events: all; | |
| } | |
| .feature { | |
| fill: #ccc; | |
| cursor: pointer; | |
| } | |
| .feature.active { | |
| fill: orange; | |
| } | |
| path { | |
| fill: #ccc; | |
| stroke: #fff; | |
| stroke-width: .5px; | |
| } | |
| path:hover { | |
| fill: #00AEEC; | |
| } | |
| .mesh { | |
| fill: none; | |
| stroke: #fff; | |
| stroke-linecap: round; | |
| stroke-linejoin: round; | |
| stroke-width: 1px; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <script src="http://d3js.org/d3.v3.min.js"></script> | |
| <script src="http://d3js.org/topojson.v1.min.js"></script> | |
| <script> | |
| var width = 960, | |
| height = 500, | |
| active = d3.select(null); | |
| var path = d3.geo.path(); | |
| var svg = d3.select("body").append("svg") | |
| .attr("width", width) | |
| .attr("height", height); | |
| svg.append("rect") | |
| .attr("class", "background") | |
| .attr("width", width) | |
| .attr("height", height) | |
| .on("click", reset); | |
| var g = svg.append("g") | |
| .style("stroke-width", "1.5px"); | |
| d3.json("tunisia.json", function(error, topology) { | |
| var featureCollection = topojson.feature(topology, topology.objects.governorates); | |
| var bounds = d3.geo.bounds(featureCollection); | |
| var centerX = d3.sum(bounds, function(d) {return d[0];}) / 2, | |
| centerY = d3.sum(bounds, function(d) {return d[1];}) / 2; | |
| var projection = d3.geo.mercator() | |
| .scale(3000) | |
| .center([centerX, centerY]); | |
| path.projection(projection); | |
| g.selectAll("path") | |
| .data(featureCollection.features) | |
| .enter().append("path") | |
| .attr("d", path) | |
| .attr("class", "feature") | |
| .on("click", clicked); | |
| g.append("path") | |
| .datum(topojson.mesh(topology, featureCollection.features, function(a, b) { return a !== b; })) | |
| .attr("class", "mesh") | |
| .attr("d", path); | |
| }); | |
| function clicked(d) { | |
| if (active.node() === this) return reset(); | |
| active.classed("active", false); | |
| active = d3.select(this).classed("active", true); | |
| var bounds = path.bounds(d), | |
| dx = bounds[1][0] - bounds[0][0], | |
| dy = bounds[1][1] - bounds[0][1], | |
| x = (bounds[0][0] + bounds[1][0]) / 2, | |
| y = (bounds[0][1] + bounds[1][1]) / 2, | |
| scale = .9 / Math.max(dx / width, dy / height), | |
| translate = [width / 2 - scale * x, height / 2 - scale * y]; | |
| g.transition() | |
| .duration(750) | |
| .style("stroke-width", 1.5 / scale + "px") | |
| .attr("transform", "translate(" + translate + ")scale(" + scale + ")"); | |
| } | |
| function reset() { | |
| active.classed("active", false); | |
| active = d3.select(null); | |
| g.transition() | |
| .duration(750) | |
| .style("stroke-width", "1.5px") | |
| .attr("transform", ""); | |
| } | |
| </script> | |
| </body> | |
| </html> |
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