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POHow to display state information on the map
 

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  1. POHow to display state information on the map
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    <p>I have made a map of canada in geojson.. I am really new to d3 and geojson. I want to display state information on the map. how should i divide the map ?</p> <p>My code for the map of canada is </p> <pre><code> &lt;script type="text/javascript"&gt; var w = 1560; var h = 900; var proj = d3.geo.mercator(); var path = d3.geo.path().projection(proj); var t = proj.translate(); // the projection's default translation var s = proj.scale() // the projection's default scale var map = d3.select("#vis").append("svg:svg") .attr("width", w) .attr("height", h) .call(d3.behavior.zoom().on("zoom", redraw)); var axes = map.append("svg:g").attr("id", "axes"); var xAxis = axes.append("svg:line") .attr("x1", t[0]) .attr("y1", 0) .attr("x2", t[0]) .attr("y2", h); var yAxis = axes.append("svg:line") .attr("x1", 0) .attr("y1", t[1]) .attr("x2", w) .attr("y2", t[1]); var uk = map.append("svg:g").attr("id", "uk"); d3.json("uk.json", function (json) { uk.selectAll("path") .data(json.features) .enter().append("svg:path") .attr("d", path); }); function redraw() { // d3.event.translate (an array) stores the current translation from the parent SVG element // t (an array) stores the projection's default translation // we add the x and y vales in each array to determine the projection's new translation var tx = t[0] * d3.event.scale + d3.event.translate[0]; var ty = t[1] * d3.event.scale + d3.event.translate[1]; proj.translate([tx, ty]); // now we determine the projection's new scale, but there's a problem: // the map doesn't 'zoom onto the mouse point' proj.scale(s * d3.event.scale); // redraw the map uk.selectAll("path").attr("d", path); // redraw the x axis xAxis.attr("x1", tx).attr("x2", tx); // redraw the y axis yAxis.attr("y1", ty).attr("y2", ty); } &lt;/script&gt; </code></pre> <p>could you please tell me what should i do ?</p> <p>please guide me.</p> <p>i am really new to d3.</p>
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    1. PTQuestion
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    1. USsahil kharidia
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      1. POHow to display state information on the map
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      1. VTModeratorReview
    1. COpossible duplicate of [displaying state information on the map with geojson and d3](http://stackoverflow.com/questions/15278575/displaying-state-information-on-the-map-with-geojson-and-d3)
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      1. POHow to display state information on the map
      1. USLars Kotthoff
    2. COlittle changed one..didnt know..how to proceed
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      1. POHow to display state information on the map
      1. USsahil kharidia
 

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