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POHow to Align D3.js X-axis Dates with Supplied Data
 

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  1. POHow to Align D3.js X-axis Dates with Supplied Data
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    <p>I'm creating a time-based line chart and everything looks fine but I'm having difficulty with the x-axis tickmarks. As you can see <a href="http://jsfiddle.net/shubo/Yvupw/" rel="nofollow">http://jsfiddle.net/shubo/Yvupw/</a> the dates start at 2013-01-30 and ends at 2013-04-17 but the chart tick mark starts at 2013-2-3 and ends at 2013-4-14. What do I need to do so the first tickmark would show 2013-01-03 and the last one would show 2013-4-17?</p> <pre><code>var json = { "data": [ { "date": "2013-04-17", "metric": 437792798 }, { "date": "2013-04-10", "metric": 437792998 }, { "date": "2013-04-03", "metric": 434633203 }, { "date": "2013-03-27", "metric": 431786310 }, { "date": "2013-03-20", "metric": 429614980 }, { "date": "2013-03-13", "metric": 427709519 }, { "date": "2013-03-06", "metric": 425894908 }, { "date": "2013-02-27", "metric": 423657524 }, { "date": "2013-02-20", "metric": 420392146 }, { "date": "2013-02-13", "metric": 417215035 }, { "date": "2013-02-06", "metric": 412433066 }, { "date": "2013-01-30", "metric": 408952856 } ] }; var margin = {top: 20, right: 50, bottom: 30, left: 50}, width = 960 - margin.left - margin.right, height = 110 - margin.top - margin.bottom; var parseDate = d3.time.format("%Y-%m-%d").parse; var x = d3.time.scale() .range([0, width]); var y = d3.scale.linear() .range([height, 0]); var xAxis = d3.svg.axis() .scale(x) .orient("bottom"); var line = d3.svg.line() .x(function(d) { return x(d.date); }) .y(function(d) { return y(d.metric); }); var svg = d3.select("body").append("svg") .attr("width", width + margin.left + margin.right) .attr("height", height + margin.top + margin.bottom) .append("g") .attr("transform", "translate(" + margin.left + "," + margin.top + ")"); var data = json.data; data.forEach(function(d) { d.date = parseDate(d.date); }); data.sort(function(a, b) { return a.date - b.date; }); x.domain([data[0].date, data[data.length - 1].date]); y.domain(d3.extent(data, function(d) { return d.metric; })); svg.append("g") .attr("class", "x axis") .attr("transform", "translate(0," + height + ")") .call(xAxis); svg.append("path") .datum(data) .attr("class", "line") .attr("d", line); var format = d3.format(','); </code></pre>
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