Refactoring
This commit is contained in:
gamonoid
772
js/nvd3/src/models/cumulativeLineChart.js
Normal file
772
js/nvd3/src/models/cumulativeLineChart.js
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nv.models.cumulativeLineChart = function() {
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"use strict";
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//============================================================
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// Public Variables with Default Settings
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//------------------------------------------------------------
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var lines = nv.models.line()
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, xAxis = nv.models.axis()
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, yAxis = nv.models.axis()
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, legend = nv.models.legend()
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, controls = nv.models.legend()
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, interactiveLayer = nv.interactiveGuideline()
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;
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var margin = {top: 30, right: 30, bottom: 50, left: 60}
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, color = nv.utils.defaultColor()
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, width = null
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, height = null
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, showLegend = true
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, showXAxis = true
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, showYAxis = true
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, rightAlignYAxis = false
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, tooltips = true
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, showControls = true
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, useInteractiveGuideline = false
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, rescaleY = true
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, tooltip = function(key, x, y, e, graph) {
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return '<h3>' + key + '</h3>' +
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'<p>' + y + ' at ' + x + '</p>'
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}
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, x //can be accessed via chart.xScale()
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, y //can be accessed via chart.yScale()
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, id = lines.id()
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, state = { index: 0, rescaleY: rescaleY }
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, defaultState = null
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, noData = 'No Data Available.'
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, average = function(d) { return d.average }
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, dispatch = d3.dispatch('tooltipShow', 'tooltipHide', 'stateChange', 'changeState')
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, transitionDuration = 250
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, noErrorCheck = false //if set to TRUE, will bypass an error check in the indexify function.
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;
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xAxis
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.orient('bottom')
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.tickPadding(7)
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;
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yAxis
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.orient((rightAlignYAxis) ? 'right' : 'left')
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;
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//============================================================
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controls.updateState(false);
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//============================================================
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// Private Variables
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//------------------------------------------------------------
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var dx = d3.scale.linear()
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, index = {i: 0, x: 0}
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;
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var showTooltip = function(e, offsetElement) {
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var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
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top = e.pos[1] + ( offsetElement.offsetTop || 0),
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x = xAxis.tickFormat()(lines.x()(e.point, e.pointIndex)),
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y = yAxis.tickFormat()(lines.y()(e.point, e.pointIndex)),
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content = tooltip(e.series.key, x, y, e, chart);
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nv.tooltip.show([left, top], content, null, null, offsetElement);
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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 container = d3.select(this).classed('nv-chart-' + id, true),
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that = this;
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var availableWidth = (width || parseInt(container.style('width')) || 960)
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- margin.left - margin.right,
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availableHeight = (height || parseInt(container.style('height')) || 400)
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- margin.top - margin.bottom;
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chart.update = function() { container.transition().duration(transitionDuration).call(chart) };
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chart.container = this;
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//set state.disabled
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state.disabled = data.map(function(d) { return !!d.disabled });
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if (!defaultState) {
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var key;
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defaultState = {};
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for (key in state) {
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if (state[key] instanceof Array)
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defaultState[key] = state[key].slice(0);
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else
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defaultState[key] = state[key];
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}
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}
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var indexDrag = d3.behavior.drag()
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.on('dragstart', dragStart)
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.on('drag', dragMove)
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.on('dragend', dragEnd);
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function dragStart(d,i) {
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d3.select(chart.container)
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.style('cursor', 'ew-resize');
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}
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function dragMove(d,i) {
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index.x = d3.event.x;
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index.i = Math.round(dx.invert(index.x));
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updateZero();
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}
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function dragEnd(d,i) {
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d3.select(chart.container)
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.style('cursor', 'auto');
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// update state and send stateChange with new index
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state.index = index.i;
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dispatch.stateChange(state);
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}
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//------------------------------------------------------------
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// Display No Data message if there's nothing to show.
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if (!data || !data.length || !data.filter(function(d) { return d.values.length }).length) {
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var noDataText = container.selectAll('.nv-noData').data([noData]);
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noDataText.enter().append('text')
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.attr('class', 'nvd3 nv-noData')
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.attr('dy', '-.7em')
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.style('text-anchor', 'middle');
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noDataText
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.attr('x', margin.left + availableWidth / 2)
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.attr('y', margin.top + availableHeight / 2)
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.text(function(d) { return d });
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return chart;
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} else {
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container.selectAll('.nv-noData').remove();
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}
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//------------------------------------------------------------
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//------------------------------------------------------------
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// Setup Scales
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x = lines.xScale();
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y = lines.yScale();
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if (!rescaleY) {
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var seriesDomains = data
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.filter(function(series) { return !series.disabled })
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.map(function(series,i) {
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var initialDomain = d3.extent(series.values, lines.y());
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//account for series being disabled when losing 95% or more
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if (initialDomain[0] < -.95) initialDomain[0] = -.95;
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return [
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(initialDomain[0] - initialDomain[1]) / (1 + initialDomain[1]),
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(initialDomain[1] - initialDomain[0]) / (1 + initialDomain[0])
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];
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});
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var completeDomain = [
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d3.min(seriesDomains, function(d) { return d[0] }),
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d3.max(seriesDomains, function(d) { return d[1] })
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]
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lines.yDomain(completeDomain);
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} else {
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lines.yDomain(null);
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}
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dx .domain([0, data[0].values.length - 1]) //Assumes all series have same length
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.range([0, availableWidth])
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.clamp(true);
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//------------------------------------------------------------
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var data = indexify(index.i, data);
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//------------------------------------------------------------
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// Setup containers and skeleton of chart
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var interactivePointerEvents = (useInteractiveGuideline) ? "none" : "all";
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var wrap = container.selectAll('g.nv-wrap.nv-cumulativeLine').data([data]);
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var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-cumulativeLine').append('g');
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var g = wrap.select('g');
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gEnter.append('g').attr('class', 'nv-interactive');
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gEnter.append('g').attr('class', 'nv-x nv-axis').style("pointer-events","none");
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gEnter.append('g').attr('class', 'nv-y nv-axis');
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gEnter.append('g').attr('class', 'nv-background');
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gEnter.append('g').attr('class', 'nv-linesWrap').style("pointer-events",interactivePointerEvents);
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gEnter.append('g').attr('class', 'nv-avgLinesWrap').style("pointer-events","none");
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gEnter.append('g').attr('class', 'nv-legendWrap');
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gEnter.append('g').attr('class', 'nv-controlsWrap');
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//------------------------------------------------------------
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// Legend
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if (showLegend) {
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legend.width(availableWidth);
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g.select('.nv-legendWrap')
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.datum(data)
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.call(legend);
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if ( margin.top != legend.height()) {
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margin.top = legend.height();
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availableHeight = (height || parseInt(container.style('height')) || 400)
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- margin.top - margin.bottom;
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}
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g.select('.nv-legendWrap')
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.attr('transform', 'translate(0,' + (-margin.top) +')')
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}
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//------------------------------------------------------------
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//------------------------------------------------------------
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// Controls
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if (showControls) {
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var controlsData = [
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{ key: 'Re-scale y-axis', disabled: !rescaleY }
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];
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controls
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.width(140)
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.color(['#444', '#444', '#444'])
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.rightAlign(false)
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.margin({top: 5, right: 0, bottom: 5, left: 20})
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;
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g.select('.nv-controlsWrap')
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.datum(controlsData)
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.attr('transform', 'translate(0,' + (-margin.top) +')')
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.call(controls);
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}
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//------------------------------------------------------------
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wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
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if (rightAlignYAxis) {
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g.select(".nv-y.nv-axis")
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.attr("transform", "translate(" + availableWidth + ",0)");
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}
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// Show error if series goes below 100%
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var tempDisabled = data.filter(function(d) { return d.tempDisabled });
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wrap.select('.tempDisabled').remove(); //clean-up and prevent duplicates
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if (tempDisabled.length) {
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wrap.append('text').attr('class', 'tempDisabled')
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.attr('x', availableWidth / 2)
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.attr('y', '-.71em')
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.style('text-anchor', 'end')
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.text(tempDisabled.map(function(d) { return d.key }).join(', ') + ' values cannot be calculated for this time period.');
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}
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//------------------------------------------------------------
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// Main Chart Component(s)
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//------------------------------------------------------------
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//Set up interactive layer
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if (useInteractiveGuideline) {
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interactiveLayer
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.width(availableWidth)
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.height(availableHeight)
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.margin({left:margin.left,top:margin.top})
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.svgContainer(container)
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.xScale(x);
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wrap.select(".nv-interactive").call(interactiveLayer);
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}
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gEnter.select('.nv-background')
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.append('rect');
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g.select('.nv-background rect')
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.attr('width', availableWidth)
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.attr('height', availableHeight);
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lines
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//.x(function(d) { return d.x })
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.y(function(d) { return d.display.y })
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.width(availableWidth)
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.height(availableHeight)
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.color(data.map(function(d,i) {
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return d.color || color(d, i);
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}).filter(function(d,i) { return !data[i].disabled && !data[i].tempDisabled; }));
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var linesWrap = g.select('.nv-linesWrap')
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.datum(data.filter(function(d) { return !d.disabled && !d.tempDisabled }));
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//d3.transition(linesWrap).call(lines);
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linesWrap.call(lines);
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/*Handle average lines [AN-612] ----------------------------*/
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//Store a series index number in the data array.
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data.forEach(function(d,i) {
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d.seriesIndex = i;
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});
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var avgLineData = data.filter(function(d) {
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return !d.disabled && !!average(d);
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});
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var avgLines = g.select(".nv-avgLinesWrap").selectAll("line")
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.data(avgLineData, function(d) { return d.key; });
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var getAvgLineY = function(d) {
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//If average lines go off the svg element, clamp them to the svg bounds.
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var yVal = y(average(d));
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if (yVal < 0) return 0;
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if (yVal > availableHeight) return availableHeight;
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return yVal;
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};
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avgLines.enter()
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.append('line')
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.style('stroke-width',2)
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.style('stroke-dasharray','10,10')
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.style('stroke',function (d,i) {
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return lines.color()(d,d.seriesIndex);
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})
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.attr('x1',0)
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.attr('x2',availableWidth)
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.attr('y1', getAvgLineY)
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.attr('y2', getAvgLineY);
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avgLines
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.style('stroke-opacity',function(d){
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//If average lines go offscreen, make them transparent
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var yVal = y(average(d));
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if (yVal < 0 || yVal > availableHeight) return 0;
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return 1;
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})
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.attr('x1',0)
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.attr('x2',availableWidth)
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.attr('y1', getAvgLineY)
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.attr('y2', getAvgLineY);
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avgLines.exit().remove();
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//Create index line -----------------------------------------
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var indexLine = linesWrap.selectAll('.nv-indexLine')
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.data([index]);
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indexLine.enter().append('rect').attr('class', 'nv-indexLine')
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.attr('width', 3)
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.attr('x', -2)
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.attr('fill', 'red')
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.attr('fill-opacity', .5)
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.style("pointer-events","all")
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.call(indexDrag)
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indexLine
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.attr('transform', function(d) { return 'translate(' + dx(d.i) + ',0)' })
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.attr('height', availableHeight)
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//------------------------------------------------------------
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//------------------------------------------------------------
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// Setup Axes
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if (showXAxis) {
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xAxis
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.scale(x)
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//Suggest how many ticks based on the chart width and D3 should listen (70 is the optimal number for MM/DD/YY dates)
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.ticks( Math.min(data[0].values.length,availableWidth/70) )
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.tickSize(-availableHeight, 0);
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g.select('.nv-x.nv-axis')
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.attr('transform', 'translate(0,' + y.range()[0] + ')');
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d3.transition(g.select('.nv-x.nv-axis'))
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.call(xAxis);
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}
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if (showYAxis) {
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yAxis
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.scale(y)
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.ticks( availableHeight / 36 )
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.tickSize( -availableWidth, 0);
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d3.transition(g.select('.nv-y.nv-axis'))
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.call(yAxis);
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}
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//------------------------------------------------------------
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//============================================================
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// Event Handling/Dispatching (in chart's scope)
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//------------------------------------------------------------
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function updateZero() {
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indexLine
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.data([index]);
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//When dragging the index line, turn off line transitions.
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// Then turn them back on when done dragging.
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var oldDuration = chart.transitionDuration();
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chart.transitionDuration(0);
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chart.update();
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chart.transitionDuration(oldDuration);
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}
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g.select('.nv-background rect')
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.on('click', function() {
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index.x = d3.mouse(this)[0];
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index.i = Math.round(dx.invert(index.x));
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// update state and send stateChange with new index
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state.index = index.i;
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dispatch.stateChange(state);
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updateZero();
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});
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lines.dispatch.on('elementClick', function(e) {
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index.i = e.pointIndex;
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index.x = dx(index.i);
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// update state and send stateChange with new index
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state.index = index.i;
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dispatch.stateChange(state);
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updateZero();
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});
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controls.dispatch.on('legendClick', function(d,i) {
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d.disabled = !d.disabled;
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rescaleY = !d.disabled;
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state.rescaleY = rescaleY;
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dispatch.stateChange(state);
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chart.update();
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});
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legend.dispatch.on('stateChange', function(newState) {
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state.disabled = newState.disabled;
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dispatch.stateChange(state);
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chart.update();
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});
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interactiveLayer.dispatch.on('elementMousemove', function(e) {
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lines.clearHighlights();
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var singlePoint, pointIndex, pointXLocation, allData = [];
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data
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.filter(function(series, i) {
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series.seriesIndex = i;
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return !series.disabled;
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})
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.forEach(function(series,i) {
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pointIndex = nv.interactiveBisect(series.values, e.pointXValue, chart.x());
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lines.highlightPoint(i, pointIndex, true);
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var point = series.values[pointIndex];
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if (typeof point === 'undefined') return;
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if (typeof singlePoint === 'undefined') singlePoint = point;
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if (typeof pointXLocation === 'undefined') pointXLocation = chart.xScale()(chart.x()(point,pointIndex));
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allData.push({
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key: series.key,
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value: chart.y()(point, pointIndex),
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color: color(series,series.seriesIndex)
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});
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});
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//Highlight the tooltip entry based on which point the mouse is closest to.
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if (allData.length > 2) {
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var yValue = chart.yScale().invert(e.mouseY);
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var domainExtent = Math.abs(chart.yScale().domain()[0] - chart.yScale().domain()[1]);
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var threshold = 0.03 * domainExtent;
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var indexToHighlight = nv.nearestValueIndex(allData.map(function(d){return d.value}),yValue,threshold);
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if (indexToHighlight !== null)
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allData[indexToHighlight].highlight = true;
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}
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var xValue = xAxis.tickFormat()(chart.x()(singlePoint,pointIndex), pointIndex);
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interactiveLayer.tooltip
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||||
.position({left: pointXLocation + margin.left, top: e.mouseY + margin.top})
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||||
.chartContainer(that.parentNode)
|
||||
.enabled(tooltips)
|
||||
.valueFormatter(function(d,i) {
|
||||
return yAxis.tickFormat()(d);
|
||||
})
|
||||
.data(
|
||||
{
|
||||
value: xValue,
|
||||
series: allData
|
||||
}
|
||||
)();
|
||||
|
||||
interactiveLayer.renderGuideLine(pointXLocation);
|
||||
|
||||
});
|
||||
|
||||
interactiveLayer.dispatch.on("elementMouseout",function(e) {
|
||||
dispatch.tooltipHide();
|
||||
lines.clearHighlights();
|
||||
});
|
||||
|
||||
dispatch.on('tooltipShow', function(e) {
|
||||
if (tooltips) showTooltip(e, that.parentNode);
|
||||
});
|
||||
|
||||
|
||||
// Update chart from a state object passed to event handler
|
||||
dispatch.on('changeState', function(e) {
|
||||
|
||||
if (typeof e.disabled !== 'undefined') {
|
||||
data.forEach(function(series,i) {
|
||||
series.disabled = e.disabled[i];
|
||||
});
|
||||
|
||||
state.disabled = e.disabled;
|
||||
}
|
||||
|
||||
|
||||
if (typeof e.index !== 'undefined') {
|
||||
index.i = e.index;
|
||||
index.x = dx(index.i);
|
||||
|
||||
state.index = e.index;
|
||||
|
||||
indexLine
|
||||
.data([index]);
|
||||
}
|
||||
|
||||
|
||||
if (typeof e.rescaleY !== 'undefined') {
|
||||
rescaleY = e.rescaleY;
|
||||
}
|
||||
|
||||
chart.update();
|
||||
});
|
||||
|
||||
//============================================================
|
||||
|
||||
});
|
||||
|
||||
return chart;
|
||||
}
|
||||
|
||||
|
||||
//============================================================
|
||||
// Event Handling/Dispatching (out of chart's scope)
|
||||
//------------------------------------------------------------
|
||||
|
||||
lines.dispatch.on('elementMouseover.tooltip', function(e) {
|
||||
e.pos = [e.pos[0] + margin.left, e.pos[1] + margin.top];
|
||||
dispatch.tooltipShow(e);
|
||||
});
|
||||
|
||||
lines.dispatch.on('elementMouseout.tooltip', function(e) {
|
||||
dispatch.tooltipHide(e);
|
||||
});
|
||||
|
||||
dispatch.on('tooltipHide', function() {
|
||||
if (tooltips) nv.tooltip.cleanup();
|
||||
});
|
||||
|
||||
//============================================================
|
||||
|
||||
|
||||
//============================================================
|
||||
// Expose Public Variables
|
||||
//------------------------------------------------------------
|
||||
|
||||
// expose chart's sub-components
|
||||
chart.dispatch = dispatch;
|
||||
chart.lines = lines;
|
||||
chart.legend = legend;
|
||||
chart.xAxis = xAxis;
|
||||
chart.yAxis = yAxis;
|
||||
chart.interactiveLayer = interactiveLayer;
|
||||
|
||||
d3.rebind(chart, lines, 'defined', 'isArea', 'x', 'y', 'xScale','yScale', 'size', 'xDomain', 'yDomain', 'xRange', 'yRange', 'forceX', 'forceY', 'interactive', 'clipEdge', 'clipVoronoi','useVoronoi', 'id');
|
||||
|
||||
chart.options = nv.utils.optionsFunc.bind(chart);
|
||||
|
||||
chart.margin = function(_) {
|
||||
if (!arguments.length) return margin;
|
||||
margin.top = typeof _.top != 'undefined' ? _.top : margin.top;
|
||||
margin.right = typeof _.right != 'undefined' ? _.right : margin.right;
|
||||
margin.bottom = typeof _.bottom != 'undefined' ? _.bottom : margin.bottom;
|
||||
margin.left = typeof _.left != 'undefined' ? _.left : margin.left;
|
||||
return chart;
|
||||
};
|
||||
|
||||
chart.width = function(_) {
|
||||
if (!arguments.length) return width;
|
||||
width = _;
|
||||
return chart;
|
||||
};
|
||||
|
||||
chart.height = function(_) {
|
||||
if (!arguments.length) return height;
|
||||
height = _;
|
||||
return chart;
|
||||
};
|
||||
|
||||
chart.color = function(_) {
|
||||
if (!arguments.length) return color;
|
||||
color = nv.utils.getColor(_);
|
||||
legend.color(color);
|
||||
return chart;
|
||||
};
|
||||
|
||||
chart.rescaleY = function(_) {
|
||||
if (!arguments.length) return rescaleY;
|
||||
rescaleY = _;
|
||||
return chart;
|
||||
};
|
||||
|
||||
chart.showControls = function(_) {
|
||||
if (!arguments.length) return showControls;
|
||||
showControls = _;
|
||||
return chart;
|
||||
};
|
||||
|
||||
chart.useInteractiveGuideline = function(_) {
|
||||
if(!arguments.length) return useInteractiveGuideline;
|
||||
useInteractiveGuideline = _;
|
||||
if (_ === true) {
|
||||
chart.interactive(false);
|
||||
chart.useVoronoi(false);
|
||||
}
|
||||
return chart;
|
||||
};
|
||||
|
||||
chart.showLegend = function(_) {
|
||||
if (!arguments.length) return showLegend;
|
||||
showLegend = _;
|
||||
return chart;
|
||||
};
|
||||
|
||||
chart.showXAxis = function(_) {
|
||||
if (!arguments.length) return showXAxis;
|
||||
showXAxis = _;
|
||||
return chart;
|
||||
};
|
||||
|
||||
chart.showYAxis = function(_) {
|
||||
if (!arguments.length) return showYAxis;
|
||||
showYAxis = _;
|
||||
return chart;
|
||||
};
|
||||
|
||||
chart.rightAlignYAxis = function(_) {
|
||||
if(!arguments.length) return rightAlignYAxis;
|
||||
rightAlignYAxis = _;
|
||||
yAxis.orient( (_) ? 'right' : 'left');
|
||||
return chart;
|
||||
};
|
||||
|
||||
chart.tooltips = function(_) {
|
||||
if (!arguments.length) return tooltips;
|
||||
tooltips = _;
|
||||
return chart;
|
||||
};
|
||||
|
||||
chart.tooltipContent = function(_) {
|
||||
if (!arguments.length) return tooltip;
|
||||
tooltip = _;
|
||||
return chart;
|
||||
};
|
||||
|
||||
chart.state = function(_) {
|
||||
if (!arguments.length) return state;
|
||||
state = _;
|
||||
return chart;
|
||||
};
|
||||
|
||||
chart.defaultState = function(_) {
|
||||
if (!arguments.length) return defaultState;
|
||||
defaultState = _;
|
||||
return chart;
|
||||
};
|
||||
|
||||
chart.noData = function(_) {
|
||||
if (!arguments.length) return noData;
|
||||
noData = _;
|
||||
return chart;
|
||||
};
|
||||
|
||||
chart.average = function(_) {
|
||||
if(!arguments.length) return average;
|
||||
average = _;
|
||||
return chart;
|
||||
};
|
||||
|
||||
chart.transitionDuration = function(_) {
|
||||
if (!arguments.length) return transitionDuration;
|
||||
transitionDuration = _;
|
||||
return chart;
|
||||
};
|
||||
|
||||
chart.noErrorCheck = function(_) {
|
||||
if (!arguments.length) return noErrorCheck;
|
||||
noErrorCheck = _;
|
||||
return chart;
|
||||
};
|
||||
|
||||
//============================================================
|
||||
|
||||
|
||||
//============================================================
|
||||
// Functions
|
||||
//------------------------------------------------------------
|
||||
|
||||
/* Normalize the data according to an index point. */
|
||||
function indexify(idx, data) {
|
||||
return data.map(function(line, i) {
|
||||
if (!line.values) {
|
||||
return line;
|
||||
}
|
||||
var indexValue = line.values[idx];
|
||||
if (indexValue == null) {
|
||||
return line;
|
||||
}
|
||||
var v = lines.y()(indexValue, idx);
|
||||
|
||||
//TODO: implement check below, and disable series if series loses 100% or more cause divide by 0 issue
|
||||
if (v < -.95 && !noErrorCheck) {
|
||||
//if a series loses more than 100%, calculations fail.. anything close can cause major distortion (but is mathematically correct till it hits 100)
|
||||
|
||||
line.tempDisabled = true;
|
||||
return line;
|
||||
}
|
||||
|
||||
line.tempDisabled = false;
|
||||
|
||||
line.values = line.values.map(function(point, pointIndex) {
|
||||
point.display = {'y': (lines.y()(point, pointIndex) - v) / (1 + v) };
|
||||
return point;
|
||||
})
|
||||
|
||||
return line;
|
||||
})
|
||||
}
|
||||
|
||||
//============================================================
|
||||
|
||||
|
||||
return chart;
|
||||
}
|
||||
Reference in New Issue
Block a user