--- /dev/null
+
+nv.models.cumulativeLineChart = function() {
+ "use strict";
+ //============================================================
+ // Public Variables with Default Settings
+ //------------------------------------------------------------
+
+ var lines = nv.models.line()
+ , xAxis = nv.models.axis()
+ , yAxis = nv.models.axis()
+ , legend = nv.models.legend()
+ , controls = nv.models.legend()
+ , interactiveLayer = nv.interactiveGuideline()
+ ;
+
+ var margin = {top: 30, right: 30, bottom: 50, left: 60}
+ , color = nv.utils.defaultColor()
+ , width = null
+ , height = null
+ , showLegend = true
+ , showXAxis = true
+ , showYAxis = true
+ , rightAlignYAxis = false
+ , tooltips = true
+ , showControls = true
+ , useInteractiveGuideline = false
+ , rescaleY = true
+ , tooltip = function(key, x, y, e, graph) {
+ return '<h3>' + key + '</h3>' +
+ '<p>' + y + ' at ' + x + '</p>'
+ }
+ , x //can be accessed via chart.xScale()
+ , y //can be accessed via chart.yScale()
+ , id = lines.id()
+ , state = { index: 0, rescaleY: rescaleY }
+ , defaultState = null
+ , noData = 'No Data Available.'
+ , average = function(d) { return d.average }
+ , dispatch = d3.dispatch('tooltipShow', 'tooltipHide', 'stateChange', 'changeState')
+ , transitionDuration = 250
+ ;
+
+ xAxis
+ .orient('bottom')
+ .tickPadding(7)
+ ;
+ yAxis
+ .orient((rightAlignYAxis) ? 'right' : 'left')
+ ;
+
+ //============================================================
+ controls.updateState(false);
+
+ //============================================================
+ // Private Variables
+ //------------------------------------------------------------
+
+ var dx = d3.scale.linear()
+ , index = {i: 0, x: 0}
+ ;
+
+ var showTooltip = function(e, offsetElement) {
+ var left = e.pos[0] + ( offsetElement.offsetLeft || 0 ),
+ top = e.pos[1] + ( offsetElement.offsetTop || 0),
+ x = xAxis.tickFormat()(lines.x()(e.point, e.pointIndex)),
+ y = yAxis.tickFormat()(lines.y()(e.point, e.pointIndex)),
+ content = tooltip(e.series.key, x, y, e, chart);
+
+ nv.tooltip.show([left, top], content, null, null, offsetElement);
+ };
+
+/*
+ //Moved to see if we can get better behavior to fix issue #315
+ var indexDrag = d3.behavior.drag()
+ .on('dragstart', dragStart)
+ .on('drag', dragMove)
+ .on('dragend', dragEnd);
+
+ function dragStart(d,i) {
+ d3.select(chart.container)
+ .style('cursor', 'ew-resize');
+ }
+
+ function dragMove(d,i) {
+ d.x += d3.event.dx;
+ d.i = Math.round(dx.invert(d.x));
+
+ d3.select(this).attr('transform', 'translate(' + dx(d.i) + ',0)');
+ chart.update();
+ }
+
+ function dragEnd(d,i) {
+ d3.select(chart.container)
+ .style('cursor', 'auto');
+ chart.update();
+ }
+*/
+
+ //============================================================
+
+
+ function chart(selection) {
+ selection.each(function(data) {
+ var container = d3.select(this).classed('nv-chart-' + id, true),
+ that = this;
+
+ var availableWidth = (width || parseInt(container.style('width')) || 960)
+ - margin.left - margin.right,
+ availableHeight = (height || parseInt(container.style('height')) || 400)
+ - margin.top - margin.bottom;
+
+
+ chart.update = function() { container.transition().duration(transitionDuration).call(chart) };
+ chart.container = this;
+
+ //set state.disabled
+ state.disabled = data.map(function(d) { return !!d.disabled });
+
+ if (!defaultState) {
+ var key;
+ defaultState = {};
+ for (key in state) {
+ if (state[key] instanceof Array)
+ defaultState[key] = state[key].slice(0);
+ else
+ defaultState[key] = state[key];
+ }
+ }
+
+ var indexDrag = d3.behavior.drag()
+ .on('dragstart', dragStart)
+ .on('drag', dragMove)
+ .on('dragend', dragEnd);
+
+
+ function dragStart(d,i) {
+ d3.select(chart.container)
+ .style('cursor', 'ew-resize');
+ }
+
+ function dragMove(d,i) {
+ index.x = d3.event.x;
+ index.i = Math.round(dx.invert(index.x));
+ updateZero();
+ }
+
+ function dragEnd(d,i) {
+ d3.select(chart.container)
+ .style('cursor', 'auto');
+
+ // update state and send stateChange with new index
+ state.index = index.i;
+ dispatch.stateChange(state);
+ }
+
+ //------------------------------------------------------------
+ // Display No Data message if there's nothing to show.
+
+ if (!data || !data.length || !data.filter(function(d) { return d.values.length }).length) {
+ var noDataText = container.selectAll('.nv-noData').data([noData]);
+
+ noDataText.enter().append('text')
+ .attr('class', 'nvd3 nv-noData')
+ .attr('dy', '-.7em')
+ .style('text-anchor', 'middle');
+
+ noDataText
+ .attr('x', margin.left + availableWidth / 2)
+ .attr('y', margin.top + availableHeight / 2)
+ .text(function(d) { return d });
+
+ return chart;
+ } else {
+ container.selectAll('.nv-noData').remove();
+ }
+
+ //------------------------------------------------------------
+
+
+ //------------------------------------------------------------
+ // Setup Scales
+
+ x = lines.xScale();
+ y = lines.yScale();
+
+
+ if (!rescaleY) {
+ var seriesDomains = data
+ .filter(function(series) { return !series.disabled })
+ .map(function(series,i) {
+ var initialDomain = d3.extent(series.values, lines.y());
+
+ //account for series being disabled when losing 95% or more
+ if (initialDomain[0] < -.95) initialDomain[0] = -.95;
+
+ return [
+ (initialDomain[0] - initialDomain[1]) / (1 + initialDomain[1]),
+ (initialDomain[1] - initialDomain[0]) / (1 + initialDomain[0])
+ ];
+ });
+
+ var completeDomain = [
+ d3.min(seriesDomains, function(d) { return d[0] }),
+ d3.max(seriesDomains, function(d) { return d[1] })
+ ]
+
+ lines.yDomain(completeDomain);
+ } else {
+ lines.yDomain(null);
+ }
+
+
+ dx .domain([0, data[0].values.length - 1]) //Assumes all series have same length
+ .range([0, availableWidth])
+ .clamp(true);
+
+ //------------------------------------------------------------
+
+
+ var data = indexify(index.i, data);
+
+
+ //------------------------------------------------------------
+ // Setup containers and skeleton of chart
+ var interactivePointerEvents = (useInteractiveGuideline) ? "none" : "all";
+ var wrap = container.selectAll('g.nv-wrap.nv-cumulativeLine').data([data]);
+ var gEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-cumulativeLine').append('g');
+ var g = wrap.select('g');
+
+ gEnter.append('g').attr('class', 'nv-interactive');
+ gEnter.append('g').attr('class', 'nv-x nv-axis').style("pointer-events","none");
+ gEnter.append('g').attr('class', 'nv-y nv-axis');
+ gEnter.append('g').attr('class', 'nv-background');
+ gEnter.append('g').attr('class', 'nv-linesWrap').style("pointer-events",interactivePointerEvents);
+ gEnter.append('g').attr('class', 'nv-avgLinesWrap').style("pointer-events","none");
+ gEnter.append('g').attr('class', 'nv-legendWrap');
+ gEnter.append('g').attr('class', 'nv-controlsWrap');
+
+
+ //------------------------------------------------------------
+ // Legend
+
+ if (showLegend) {
+ legend.width(availableWidth);
+
+ g.select('.nv-legendWrap')
+ .datum(data)
+ .call(legend);
+
+ if ( margin.top != legend.height()) {
+ margin.top = legend.height();
+ availableHeight = (height || parseInt(container.style('height')) || 400)
+ - margin.top - margin.bottom;
+ }
+
+ g.select('.nv-legendWrap')
+ .attr('transform', 'translate(0,' + (-margin.top) +')')
+ }
+
+ //------------------------------------------------------------
+
+
+ //------------------------------------------------------------
+ // Controls
+
+ if (showControls) {
+ var controlsData = [
+ { key: 'Re-scale y-axis', disabled: !rescaleY }
+ ];
+
+ controls.width(140).color(['#444', '#444', '#444']);
+ g.select('.nv-controlsWrap')
+ .datum(controlsData)
+ .attr('transform', 'translate(0,' + (-margin.top) +')')
+ .call(controls);
+ }
+
+ //------------------------------------------------------------
+
+
+ wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
+
+ if (rightAlignYAxis) {
+ g.select(".nv-y.nv-axis")
+ .attr("transform", "translate(" + availableWidth + ",0)");
+ }
+
+ // Show error if series goes below 100%
+ var tempDisabled = data.filter(function(d) { return d.tempDisabled });
+
+ wrap.select('.tempDisabled').remove(); //clean-up and prevent duplicates
+ if (tempDisabled.length) {
+ wrap.append('text').attr('class', 'tempDisabled')
+ .attr('x', availableWidth / 2)
+ .attr('y', '-.71em')
+ .style('text-anchor', 'end')
+ .text(tempDisabled.map(function(d) { return d.key }).join(', ') + ' values cannot be calculated for this time period.');
+ }
+
+ //------------------------------------------------------------
+ // Main Chart Component(s)
+
+ //------------------------------------------------------------
+ //Set up interactive layer
+ if (useInteractiveGuideline) {
+ interactiveLayer
+ .width(availableWidth)
+ .height(availableHeight)
+ .margin({left:margin.left,top:margin.top})
+ .svgContainer(container)
+ .xScale(x);
+ wrap.select(".nv-interactive").call(interactiveLayer);
+ }
+
+ gEnter.select('.nv-background')
+ .append('rect');
+
+ g.select('.nv-background rect')
+ .attr('width', availableWidth)
+ .attr('height', availableHeight);
+
+ lines
+ //.x(function(d) { return d.x })
+ .y(function(d) { return d.display.y })
+ .width(availableWidth)
+ .height(availableHeight)
+ .color(data.map(function(d,i) {
+ return d.color || color(d, i);
+ }).filter(function(d,i) { return !data[i].disabled && !data[i].tempDisabled; }));
+
+
+
+ var linesWrap = g.select('.nv-linesWrap')
+ .datum(data.filter(function(d) { return !d.disabled && !d.tempDisabled }));
+
+ //d3.transition(linesWrap).call(lines);
+ linesWrap.call(lines);
+
+ /*Handle average lines [AN-612] ----------------------------*/
+
+ //Store a series index number in the data array.
+ data.forEach(function(d,i) {
+ d.seriesIndex = i;
+ });
+
+ var avgLineData = data.filter(function(d) {
+ return !d.disabled && !!average(d);
+ });
+
+ var avgLines = g.select(".nv-avgLinesWrap").selectAll("line")
+ .data(avgLineData, function(d) { return d.key; });
+
+ var getAvgLineY = function(d) {
+ //If average lines go off the svg element, clamp them to the svg bounds.
+ var yVal = y(average(d));
+ if (yVal < 0) return 0;
+ if (yVal > availableHeight) return availableHeight;
+ return yVal;
+ };
+
+ avgLines.enter()
+ .append('line')
+ .style('stroke-width',2)
+ .style('stroke-dasharray','10,10')
+ .style('stroke',function (d,i) {
+ return lines.color()(d,d.seriesIndex);
+ })
+ .attr('x1',0)
+ .attr('x2',availableWidth)
+ .attr('y1', getAvgLineY)
+ .attr('y2', getAvgLineY);
+
+ avgLines
+ .style('stroke-opacity',function(d){
+ //If average lines go offscreen, make them transparent
+ var yVal = y(average(d));
+ if (yVal < 0 || yVal > availableHeight) return 0;
+ return 1;
+ })
+ .attr('x1',0)
+ .attr('x2',availableWidth)
+ .attr('y1', getAvgLineY)
+ .attr('y2', getAvgLineY);
+
+ avgLines.exit().remove();
+
+ //Create index line -----------------------------------------
+
+ var indexLine = linesWrap.selectAll('.nv-indexLine')
+ .data([index]);
+ indexLine.enter().append('rect').attr('class', 'nv-indexLine')
+ .attr('width', 3)
+ .attr('x', -2)
+ .attr('fill', 'red')
+ .attr('fill-opacity', .5)
+ .style("pointer-events","all")
+ .call(indexDrag)
+
+ indexLine
+ .attr('transform', function(d) { return 'translate(' + dx(d.i) + ',0)' })
+ .attr('height', availableHeight)
+
+ //------------------------------------------------------------
+
+
+ //------------------------------------------------------------
+ // Setup Axes
+
+ if (showXAxis) {
+ xAxis
+ .scale(x)
+ //Suggest how many ticks based on the chart width and D3 should listen (70 is the optimal number for MM/DD/YY dates)
+ .ticks( Math.min(data[0].values.length,availableWidth/70) )
+ .tickSize(-availableHeight, 0);
+
+ g.select('.nv-x.nv-axis')
+ .attr('transform', 'translate(0,' + y.range()[0] + ')');
+ d3.transition(g.select('.nv-x.nv-axis'))
+ .call(xAxis);
+ }
+
+
+ if (showYAxis) {
+ yAxis
+ .scale(y)
+ .ticks( availableHeight / 36 )
+ .tickSize( -availableWidth, 0);
+
+ d3.transition(g.select('.nv-y.nv-axis'))
+ .call(yAxis);
+ }
+ //------------------------------------------------------------
+
+
+ //============================================================
+ // Event Handling/Dispatching (in chart's scope)
+ //------------------------------------------------------------
+
+
+ function updateZero() {
+ indexLine
+ .data([index]);
+
+ //When dragging the index line, turn off line transitions.
+ // Then turn them back on when done dragging.
+ var oldDuration = chart.transitionDuration();
+ chart.transitionDuration(0);
+ chart.update();
+ chart.transitionDuration(oldDuration);
+ }
+
+ g.select('.nv-background rect')
+ .on('click', function() {
+ index.x = d3.mouse(this)[0];
+ index.i = Math.round(dx.invert(index.x));
+
+ // update state and send stateChange with new index
+ state.index = index.i;
+ dispatch.stateChange(state);
+
+ updateZero();
+ });
+
+ lines.dispatch.on('elementClick', function(e) {
+ index.i = e.pointIndex;
+ index.x = dx(index.i);
+
+ // update state and send stateChange with new index
+ state.index = index.i;
+ dispatch.stateChange(state);
+
+ updateZero();
+ });
+
+ controls.dispatch.on('legendClick', function(d,i) {
+ d.disabled = !d.disabled;
+ rescaleY = !d.disabled;
+
+ state.rescaleY = rescaleY;
+ dispatch.stateChange(state);
+ chart.update();
+ });
+
+
+ legend.dispatch.on('stateChange', function(newState) {
+ state.disabled = newState.disabled;
+ dispatch.stateChange(state);
+ chart.update();
+ });
+
+ interactiveLayer.dispatch.on('elementMousemove', function(e) {
+ lines.clearHighlights();
+ var singlePoint, pointIndex, pointXLocation, allData = [];
+
+
+ data
+ .filter(function(series, i) {
+ series.seriesIndex = i;
+ return !series.disabled;
+ })
+ .forEach(function(series,i) {
+ pointIndex = nv.interactiveBisect(series.values, e.pointXValue, chart.x());
+ lines.highlightPoint(i, pointIndex, true);
+ var point = series.values[pointIndex];
+ if (typeof point === 'undefined') return;
+ if (typeof singlePoint === 'undefined') singlePoint = point;
+ if (typeof pointXLocation === 'undefined') pointXLocation = chart.xScale()(chart.x()(point,pointIndex));
+ allData.push({
+ key: series.key,
+ value: chart.y()(point, pointIndex),
+ color: color(series,series.seriesIndex)
+ });
+ });
+
+ //Highlight the tooltip entry based on which point the mouse is closest to.
+ if (allData.length > 2) {
+ var yValue = chart.yScale().invert(e.mouseY);
+ var domainExtent = Math.abs(chart.yScale().domain()[0] - chart.yScale().domain()[1]);
+ var threshold = 0.03 * domainExtent;
+ var indexToHighlight = nv.nearestValueIndex(allData.map(function(d){return d.value}),yValue,threshold);
+ if (indexToHighlight !== null)
+ allData[indexToHighlight].highlight = true;
+ }
+
+ var xValue = xAxis.tickFormat()(chart.x()(singlePoint,pointIndex), pointIndex);
+ interactiveLayer.tooltip
+ .position({left: pointXLocation + margin.left, top: e.mouseY + margin.top})
+ .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;
+ };
+
+ //============================================================
+
+
+ //============================================================
+ // 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 v = lines.y()(line.values[idx], idx);
+
+ //TODO: implement check below, and disable series if series loses 100% or more cause divide by 0 issue
+ if (v < -.95) {
+ //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;
+}
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