mirror of
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82 lines
No EOL
2 KiB
HTML
82 lines
No EOL
2 KiB
HTML
<style>
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.arc path {
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stroke: #fff;
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}
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</style>
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<script>
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var width = 250,
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height = 250,
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radius = Math.min(width, height) / 2;
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var color = d3.scale.ordinal()
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.range(["#98abc5", "#8a89a6", "#7b6888", "#6b486b", "#a05d56", "#d0743c", "#ff8c00"]);
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var arc = d3.svg.arc()
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.outerRadius(radius - 10)
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.innerRadius(0);
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var pie = d3.layout.pie()
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.sort(null)
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.value(function(d) { return d.value; });
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// Where to put the chart
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var svg = d3.select("#charts").append("svg")
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.attr("width", width)
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.attr("height", height)
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.append("g")
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.attr("transform", "translate(" + width / 2 + "," + height / 2 + ")");
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var registered = '<%= h @pre_registered%>';
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var data = [
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{"status":"did not attend","value":'<%= h @pre_registered - @pre_registered_attended %>'},
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{"status":"attended","value":'<%= h @pre_registered_attended %>'}
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];
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var g = svg.selectAll(".arc")
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.data(pie(data))
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.enter().append("g")
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.attr("class", "arc");
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g.append("path")
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.attr("d", arc)
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.style("fill", function(d) { return color(d.data.status); });
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// Put text inside every piece of the pie-chart
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g.append("text")
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.attr("transform", function(d) { return "translate(" + arc.centroid(d) + ")"; })
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.attr("dy", ".35em")
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.style("text-anchor", "middle")
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.text(function(d) { return d3.round(d.data.value / registered * 100) + "%"; });
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// Title of chart
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svg.append("text")
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.attr("class", "title")
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.attr("x", radius)
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.attr("y", -radius+10)
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.text("% of pre-registered");
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// Create & position legend
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var legend = d3.select("#charts").append("svg")
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.attr("class", "legend")
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.attr("width", radius*2)
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.attr("height", 230)
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.selectAll("g")
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.data(color.domain().slice().reverse())
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.enter().append("g")
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.attr("transform", function(d, i) { return "translate(0," + i * 20 + ")"; });
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legend.append("rect")
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.attr("width", 18)
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.attr("height", 18)
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.style("fill", color);
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legend.append("text")
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.attr("x", 24)
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.attr("y", 9)
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.attr("dy", ".15em")
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.text(function(d) { return d; });
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</script> |