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<!DOCTYPE html> |
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<meta charset="utf-8"> |
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<style> |
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.bar { |
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fill: steelblue; |
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} |
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.bar:hover { |
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fill: brown; |
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} |
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.title { |
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font: bold 14px "Helvetica Neue", Helvetica, Arial, sans-serif; |
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} |
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.axis { |
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font: 10px sans-serif; |
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} |
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.axis path, |
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.axis line { |
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fill: none; |
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stroke: #000; |
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shape-rendering: crispEdges; |
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} |
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.x.axis path { |
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display: none; |
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} |
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</style> |
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<body> |
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<script src="http://d3js.org/d3.v3.min.js"></script> |
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<script> |
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// Set default width and height, calculate ratio |
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var default_width = 960; |
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var default_height = 500; |
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var default_ratio = default_width / default_height; |
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// Current (non-responsive) width and height are calcuated from the default, minus the margins |
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var margin = {top: 80, right: 180, bottom: 80, left: 180}, |
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width = default_width - margin.left - margin.right, |
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height = default_height - margin.top - margin.bottom; |
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// Determine current size, which determines vars |
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function set_vars() { |
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//alert('setting vars') |
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current_width = window.innerWidth; |
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current_height = window.innerHeight; |
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current_ratio = current_width / current_height; |
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// Check if height is limiting factor |
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if ( current_ratio > default_ratio ){ |
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h = current_height; |
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w = h * default_ratio; |
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// Else width is limiting |
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} else { |
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w = current_width; |
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h = w / default_ratio; |
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} |
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// Set new width and height based on graph dimensions |
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width = w - margin.left - margin.right; |
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height = h - margin.top - margin.bottom; |
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}; |
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set_vars(); |
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function drawGraphic() { |
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var x = d3.scale.ordinal() |
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.rangeRoundBands([0, width], .1, .3); |
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var y = d3.scale.linear() |
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.range([height, 0]); |
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var xAxis = d3.svg.axis() |
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.scale(x) |
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.orient("bottom"); |
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var yAxis = d3.svg.axis() |
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.scale(y) |
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.orient("left") |
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.ticks(8, "%"); |
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var svg = d3.select("body").append("svg") |
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.attr("width", width + margin.left + margin.right) |
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.attr("height", height + margin.top + margin.bottom) |
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.append("g") |
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.attr("transform", "translate(" + margin.left + "," + margin.top + ")"); |
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d3.tsv("data.tsv", type, function(error, data) { |
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x.domain(data.map(function(d) { return d.name; })); |
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y.domain([0, d3.max(data, function(d) { return d.value; })]); |
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svg.append("text") |
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.attr("class", "title") |
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.attr("x", x(data[0].name)) |
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.attr("y", -26) |
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.text("Why Are We Leaving Facebook?"); |
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svg.append("g") |
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.attr("class", "x axis") |
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.attr("transform", "translate(0," + height + ")") |
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.call(xAxis) |
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.selectAll(".tick text") |
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.call(wrap, x.rangeBand()); |
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svg.append("g") |
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.attr("class", "y axis") |
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.call(yAxis); |
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svg.selectAll(".bar") |
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.data(data) |
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.enter().append("rect") |
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.attr("class", "bar") |
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.attr("x", function(d) { return x(d.name); }) |
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.attr("width", x.rangeBand()) |
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.attr("y", function(d) { return y(d.value); }) |
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.attr("height", function(d) { return height - y(d.value); }); |
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}); // End d3.tsv |
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}; // End drawGraphic function |
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drawGraphic(); |
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// Use a timer so the chart is not constantly redrawn while window is being resized. |
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var resizeTimer; |
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window.onresize = function(event) { |
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clearTimeout(resizeTimer); |
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resizeTimer = setTimeout(function() |
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{ |
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var s = d3.selectAll('svg'); |
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s = s.remove(); |
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set_vars(); |
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drawGraphic(); |
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}, 100); |
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} |
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function wrap(text, width) { |
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text.each(function() { |
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var text = d3.select(this), |
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words = text.text().split(/\s+/).reverse(), |
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word, |
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line = [], |
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lineNumber = 0, |
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lineHeight = 1.1, // ems |
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y = text.attr("y"), |
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dy = parseFloat(text.attr("dy")), |
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tspan = text.text(null).append("tspan").attr("x", 0).attr("y", y).attr("dy", dy + "em"); |
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while (word = words.pop()) { |
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line.push(word); |
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tspan.text(line.join(" ")); |
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if (tspan.node().getComputedTextLength() > width) { |
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line.pop(); |
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tspan.text(line.join(" ")); |
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line = [word]; |
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tspan = text.append("tspan").attr("x", 0).attr("y", y).attr("dy", ++lineNumber * lineHeight + dy + "em").text(word); |
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} |
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} |
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}); |
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} |
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function type(d) { |
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d.value = +d.value; |
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return d; |
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} |
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</script> |
