287 lines
8.6 KiB
JavaScript
287 lines
8.6 KiB
JavaScript
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nv.models.stackedArea = function() {
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//Default Settings
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var margin = {top: 0, right: 0, bottom: 0, left: 0},
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width = 960,
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height = 500,
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color = d3.scale.category20().range(), // array of colors to be used in order
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id = Math.floor(Math.random() * 100000), //Create semi-unique ID incase user doesn't selet one
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getX = function(d) { return d.x }, // accessor to get the x value from a data point
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getY = function(d) { return d.y }, // accessor to get the y value from a data point
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style = 'stack',
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offset = 'zero',
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order = 'default',
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clipEdge = false; // if true, masks lines within x and y scale
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/************************************
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* offset:
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* 'wiggle' (stream)
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* 'zero' (stacked)
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* 'expand' (normalize to 100%)
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* 'silhouette' (simple centered)
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*
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* order:
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* 'inside-out' (stream)
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* 'default' (input order)
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************************************/
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var scatter= nv.models.scatter()
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.size(2.2) // default size
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.sizeDomain([2.5]), //set to speed up calculation, needs to be unset if there is a cstom size accessor
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x = scatter.xScale(),
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y = scatter.yScale(),
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dispatch = d3.dispatch('tooltipShow', 'tooltipHide', 'areaClick', 'areaMouseover', 'areaMouseout');
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function chart(selection) {
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selection.each(function(data) {
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// Need to leave data alone to switch between stacked, stream, and expanded
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var dataCopy = JSON.parse(JSON.stringify(data)),
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availableWidth = width - margin.left - margin.right,
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availableHeight = height - margin.top - margin.bottom;
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//TODO: try to get rid of the need for copying the data, and use the data directly
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//console.log(dataCopy);
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dataCopy = dataCopy.map(function(series,i) {
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if (series.disabled)
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series.values = series.values.map(function(d,i) {
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d._y = d.y || d._y;
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d.y = 0; //TODO: need to use value from getY, not always d.y
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return d
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});
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return series;
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});
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//TODO: deal with negative stacked charts
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//compute the data based on offset and order (calc's y0 for every point)
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dataCopy = d3.layout.stack()
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.offset(offset)
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.order(order)
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.values(function(d){ return d.values })
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.y(getY)
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(dataCopy);
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var wrap = d3.select(this).selectAll('g.wrap.stackedarea').data([dataCopy]);
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var wrapEnter = wrap.enter().append('g').attr('class', 'wrap nvd3 stackedarea');
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var defsEnter = wrapEnter.append('defs');
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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', 'areaWrap');
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scatter
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.width(availableWidth)
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.height(availableHeight)
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//.x(getX)
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.y(function(d) { return d.y + d.y0 }) // TODO: allow for getY to be other than d.y
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.forceY([0])
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.color(dataCopy.map(function(d,i) {
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return d.color || color[i % color.length];
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}).filter(function(d,i) { return !dataCopy[i].disabled }));
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gEnter.append('g').attr('class', 'scatterWrap');
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var scatterWrap= g.select('.scatterWrap')
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.datum(dataCopy.filter(function(d) { return !d.disabled }))
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d3.transition(scatterWrap).call(scatter);
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wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')');
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defsEnter.append('clipPath')
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.attr('id', 'edge-clip-' + id)
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.append('rect');
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wrap.select('#edge-clip-' + id + ' rect')
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.attr('width', availableWidth)
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.attr('height', availableHeight);
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g .attr('clip-path', clipEdge ? 'url(#edge-clip-' + id + ')' : '');
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var area = d3.svg.area()
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.x(function(d,i) { return x(scatter.x()(d,i)) })
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.y0(function(d) { return y(d.y0) })
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.y1(function(d) { return y(d.y + d.y0) });
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var zeroArea = d3.svg.area()
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.x(function(d,i) { return x(scatter.x()(d,i)) })
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.y0(function(d) { return y(d.y0) })
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.y1(function(d) { return y(d.y0) });
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var path = g.select('.areaWrap').selectAll('path.area')
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.data(function(d) { return d });
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//.data(function(d) { return d }, function(d) { return d.key });
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path.enter().append('path').attr('class', function(d,i) { return 'area area-' + i })
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.on('mouseover', function(d,i) {
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d3.select(this).classed('hover', true);
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dispatch.areaMouseover({
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point: d,
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series: d.key,
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//pos: [x(getX(point, d.point)) + margin.left, y(getY(point, d.point)) + margin.top],
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pos: [d3.event.pageX, d3.event.pageY],
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seriesIndex: i
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//pointIndex: d.point
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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.areaMouseout({
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point: d,
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series: d.key,
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//pos: [x(getX(point, d.point)) + margin.left, y(getY(point, d.point)) + margin.top],
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pos: [d3.event.pageX, d3.event.pageY],
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seriesIndex: i
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//pointIndex: d.point
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});
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})
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.on('click', function(d,i) {
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d3.select(this).classed('hover', false);
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dispatch.areaClick({
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point: d,
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series: d.key,
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//pos: [x(getX(point, d.point)) + margin.left, y(getY(point, d.point)) + margin.top],
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pos: [d3.event.pageX, d3.event.pageY],
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seriesIndex: i
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//pointIndex: d.point
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});
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})
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d3.transition(path.exit())
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.attr('d', function(d,i) { return zeroArea(d.values,i) }) // TODO: fix this so transition is still fluid
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.remove();
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path
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.style('fill', function(d,i){ return d.color || color[i % color.length] })
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.style('stroke', function(d,i){ return d.color || color[i % color.length] });
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d3.transition(path)
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.attr('d', function(d,i) { return area(d.values,i) })
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scatter.dispatch.on('elementClick.area', function(e) {
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dispatch.areaClick(e);
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})
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scatter.dispatch.on('elementMouseover.area', function(e) {
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g.select('.area-' + e.seriesIndex).classed('hover', true);
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});
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scatter.dispatch.on('elementMouseout.area', function(e) {
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g.select('.area-' + e.seriesIndex).classed('hover', false);
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});
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});
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return chart;
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}
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chart.dispatch = dispatch;
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chart.scatter = scatter;
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d3.rebind(chart, scatter, 'x', 'interactive', 'size', 'xScale', 'yScale', 'zScale', 'xDomain', 'yDomain', 'sizeDomain', 'forceX', 'forceY', 'forceSize', 'clipVoronoi', 'clipRadius');
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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 = d3.functor(_);
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scatter.x(_);
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return chart;
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};
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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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//scatter.y(_);
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return chart;
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}
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chart.margin = function(_) {
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if (!arguments.length) return margin;
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margin = _;
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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.clipEdge = function(_) {
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if (!arguments.length) return clipEdge;
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clipEdge = _;
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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 = _;
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return chart;
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};
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chart.offset = function(_) {
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if (!arguments.length) return offset;
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offset = _;
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return chart;
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};
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chart.order = function(_) {
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if (!arguments.length) return order;
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order = _;
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return chart;
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};
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//shortcut for offset + order
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chart.style = function(_) {
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if (!arguments.length) return style;
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style = _;
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switch (style) {
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case 'stack':
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offset = 'zero';
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order = 'default';
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break;
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case 'stream':
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offset = 'wiggle';
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order = 'inside-out';
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break;
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case 'expand':
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offset = 'expand';
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order = 'default';
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break;
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}
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return chart;
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};
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scatter.dispatch.on('elementMouseover.tooltip', function(e) {
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e.pos = [e.pos[0] + margin.left, e.pos[1] + margin.top],
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dispatch.tooltipShow(e);
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});
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scatter.dispatch.on('elementMouseout.tooltip', function(e) {
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dispatch.tooltipHide(e);
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});
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return chart;
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}
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