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350 lines
11 KiB
JavaScript
350 lines
11 KiB
JavaScript
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nv.models.pie = function() {
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//============================================================
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// Public Variables with Default Settings
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//------------------------------------------------------------
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var margin = {top: 0, right: 0, bottom: 0, left: 0}
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, width = 500
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, height = 500
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, getValues = function(d) { return d.values }
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, getX = function(d) { return d.x }
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, getY = function(d) { return d.y }
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, id = Math.floor(Math.random() * 10000) //Create semi-unique ID in case user doesn't select one
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, color = nv.utils.defaultColor()
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, valueFormat = d3.format(',.2f')
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, showLabels = true
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, donutLabelsOutside = false
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, labelThreshold = .02 //if slice percentage is under this, don't show label
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, donut = false
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, labelSunbeamLayout = false
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, dispatch = d3.dispatch('chartClick', 'elementClick', 'elementDblClick', 'elementMouseover', 'elementMouseout')
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;
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//============================================================
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function chart(selection) {
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selection.each(function(data) {
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var availableWidth = width - margin.left - margin.right,
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availableHeight = height - margin.top - margin.bottom,
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radius = Math.min(availableWidth, availableHeight) / 2,
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arcRadius = radius-(radius / 5),
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container = d3.select(this);
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//------------------------------------------------------------
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// Setup containers and skeleton of chart
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//var wrap = container.selectAll('.nv-wrap.nv-pie').data([data]);
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var wrap = container.selectAll('.nv-wrap.nv-pie').data([getValues(data[0])]);
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var wrapEnter = wrap.enter().append('g').attr('class','nvd3 nv-wrap nv-pie nv-chart-' + id);
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var gEnter = wrapEnter.append('g');
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var g = wrap.select('g');
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gEnter.append('g').attr('class', 'nv-pie');
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wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
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g.select('.nv-pie').attr('transform', 'translate(' + availableWidth / 2 + ',' + availableHeight / 2 + ')');
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//------------------------------------------------------------
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container
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.on('click', function(d,i) {
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dispatch.chartClick({
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data: d,
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index: i,
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pos: d3.event,
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id: id
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});
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});
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var arc = d3.svg.arc()
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.outerRadius(arcRadius);
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if (donut) arc.innerRadius(radius / 2);
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// Setup the Pie chart and choose the data element
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var pie = d3.layout.pie()
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.sort(null)
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.value(function(d) { return d.disabled ? 0 : getY(d) });
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var slices = wrap.select('.nv-pie').selectAll('.nv-slice')
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.data(pie);
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slices.exit().remove();
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var ae = slices.enter().append('g')
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.attr('class', 'nv-slice')
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.on('mouseover', function(d,i){
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d3.select(this).classed('hover', true);
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dispatch.elementMouseover({
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label: getX(d.data),
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value: getY(d.data),
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point: d.data,
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pointIndex: i,
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pos: [d3.event.pageX, d3.event.pageY],
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id: id
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});
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})
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.on('mouseout', function(d,i){
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d3.select(this).classed('hover', false);
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dispatch.elementMouseout({
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label: getX(d.data),
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value: getY(d.data),
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point: d.data,
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index: i,
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id: id
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});
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})
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.on('click', function(d,i) {
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dispatch.elementClick({
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label: getX(d.data),
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value: getY(d.data),
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point: d.data,
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index: i,
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pos: d3.event,
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id: id
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});
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d3.event.stopPropagation();
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})
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.on('dblclick', function(d,i) {
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dispatch.elementDblClick({
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label: getX(d.data),
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value: getY(d.data),
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point: d.data,
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index: i,
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pos: d3.event,
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id: id
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});
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d3.event.stopPropagation();
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});
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slices
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.attr('fill', function(d,i) { return color(d, i); })
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.attr('stroke', function(d,i) { return color(d, i); });
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var paths = ae.append('path')
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.each(function(d) { this._current = d; });
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//.attr('d', arc);
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d3.transition(slices.select('path'))
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.attr('d', arc)
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.attrTween('d', arcTween);
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if (showLabels) {
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// This does the normal label
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var labelsArc = arc;
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if (donutLabelsOutside) {
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labelsArc = d3.svg.arc().outerRadius(arc.outerRadius())
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}
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ae.append("g").classed("nv-label", true)
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.each(function(d, i) {
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var group = d3.select(this);
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group
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.attr('transform', function(d) {
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if (labelSunbeamLayout) {
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d.outerRadius = arcRadius + 10; // Set Outer Coordinate
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d.innerRadius = arcRadius + 15; // Set Inner Coordinate
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var rotateAngle = (d.startAngle + d.endAngle) / 2 * (180 / Math.PI);
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if ((d.startAngle+d.endAngle)/2 < Math.PI) {
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rotateAngle -= 90;
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} else {
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rotateAngle += 90;
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}
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return 'translate(' + labelsArc.centroid(d) + ') rotate(' + rotateAngle + ')';
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} else {
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d.outerRadius = radius + 10; // Set Outer Coordinate
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d.innerRadius = radius + 15; // Set Inner Coordinate
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return 'translate(' + labelsArc.centroid(d) + ')'
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}
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});
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group.append('rect')
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.style('stroke', '#fff')
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.style('fill', '#fff')
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.attr("rx", 3)
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.attr("ry", 3);
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group.append('text')
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.style('text-anchor', labelSunbeamLayout ? ((d.startAngle + d.endAngle) / 2 < Math.PI ? 'start' : 'end') : 'middle') //center the text on it's origin or begin/end if orthogonal aligned
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.style('fill', '#000')
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});
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slices.select(".nv-label").transition()
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.attr('transform', function(d) {
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if (labelSunbeamLayout) {
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d.outerRadius = arcRadius + 10; // Set Outer Coordinate
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d.innerRadius = arcRadius + 15; // Set Inner Coordinate
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var rotateAngle = (d.startAngle + d.endAngle) / 2 * (180 / Math.PI);
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if ((d.startAngle+d.endAngle)/2 < Math.PI) {
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rotateAngle -= 90;
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} else {
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rotateAngle += 90;
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}
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return 'translate(' + labelsArc.centroid(d) + ') rotate(' + rotateAngle + ')';
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} else {
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d.outerRadius = radius + 10; // Set Outer Coordinate
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d.innerRadius = radius + 15; // Set Inner Coordinate
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return 'translate(' + labelsArc.centroid(d) + ')'
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}
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});
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slices.each(function(d, i) {
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var slice = d3.select(this);
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slice
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.select(".nv-label text")
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.style('text-anchor', labelSunbeamLayout ? ((d.startAngle + d.endAngle) / 2 < Math.PI ? 'start' : 'end') : 'middle') //center the text on it's origin or begin/end if orthogonal aligned
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.text(function(d, i) {
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var percent = (d.endAngle - d.startAngle) / (2 * Math.PI);
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return (d.value && percent > labelThreshold) ? getX(d.data) : '';
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});
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var textBox = slice.select('text').node().getBBox();
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slice.select(".nv-label rect")
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.attr("width", textBox.width + 10)
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.attr("height", textBox.height + 10)
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.attr("transform", function() {
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return "translate(" + [textBox.x - 5, textBox.y - 5] + ")";
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});
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});
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}
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// Computes the angle of an arc, converting from radians to degrees.
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function angle(d) {
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var a = (d.startAngle + d.endAngle) * 90 / Math.PI - 90;
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return a > 90 ? a - 180 : a;
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}
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function arcTween(a) {
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if (!donut) a.innerRadius = 0;
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var i = d3.interpolate(this._current, a);
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this._current = i(0);
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return function(t) {
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return arc(i(t));
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};
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}
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function tweenPie(b) {
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b.innerRadius = 0;
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var i = d3.interpolate({startAngle: 0, endAngle: 0}, b);
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return function(t) {
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return arc(i(t));
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};
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}
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});
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return chart;
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}
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//============================================================
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// Expose Public Variables
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//------------------------------------------------------------
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chart.dispatch = dispatch;
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chart.margin = function(_) {
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if (!arguments.length) return margin;
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margin.top = typeof _.top != 'undefined' ? _.top : margin.top;
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margin.right = typeof _.right != 'undefined' ? _.right : margin.right;
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margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
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margin.left = typeof _.left != 'undefined' ? _.left : margin.left;
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return chart;
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};
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chart.width = function(_) {
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if (!arguments.length) return width;
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width = _;
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return chart;
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};
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chart.height = function(_) {
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if (!arguments.length) return height;
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height = _;
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return chart;
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};
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chart.values = function(_) {
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if (!arguments.length) return getValues;
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getValues = _;
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return chart;
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};
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chart.x = function(_) {
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if (!arguments.length) return getX;
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getX = _;
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return chart;
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};
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chart.y = function(_) {
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if (!arguments.length) return getY;
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getY = d3.functor(_);
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return chart;
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};
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chart.showLabels = function(_) {
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if (!arguments.length) return showLabels;
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showLabels = _;
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return chart;
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};
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chart.labelSunbeamLayout = function(_) {
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if (!arguments.length) return labelSunbeamLayout;
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labelSunbeamLayout = _;
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return chart;
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};
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chart.donutLabelsOutside = function(_) {
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if (!arguments.length) return donutLabelsOutside;
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donutLabelsOutside = _;
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return chart;
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};
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chart.donut = function(_) {
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if (!arguments.length) return donut;
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donut = _;
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return chart;
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};
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chart.id = function(_) {
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if (!arguments.length) return id;
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id = _;
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return chart;
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};
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chart.color = function(_) {
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if (!arguments.length) return color;
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color = nv.utils.getColor(_);
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return chart;
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};
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chart.valueFormat = function(_) {
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if (!arguments.length) return valueFormat;
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valueFormat = _;
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return chart;
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};
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chart.labelThreshold = function(_) {
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if (!arguments.length) return labelThreshold;
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labelThreshold = _;
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return chart;
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};
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//============================================================
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return chart;
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}
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