nv.models.stackedArea = function() { //============================================================ // Public Variables with Default Settings //------------------------------------------------------------ var margin = {top: 0, right: 0, bottom: 0, left: 0} , width = 960 , height = 500 , color = nv.utils.defaultColor() // a function that computes the color , id = Math.floor(Math.random() * 100000) //Create semi-unique ID incase user doesn't selet one , getX = function(d) { return d.x } // accessor to get the x value from a data point , getY = function(d) { return d.y } // accessor to get the y value from a data point , style = 'stack' , offset = 'zero' , order = 'default' , interpolate = 'linear' // controls the line interpolation , clipEdge = false // if true, masks lines within x and y scale , x //can be accessed via chart.xScale() , y //can be accessed via chart.yScale() , scatter = nv.models.scatter() , dispatch = d3.dispatch('tooltipShow', 'tooltipHide', 'areaClick', 'areaMouseover', 'areaMouseout') ; scatter .size(2.2) // default size .sizeDomain([2.2]) // all the same size by default ; /************************************ * offset: * 'wiggle' (stream) * 'zero' (stacked) * 'expand' (normalize to 100%) * 'silhouette' (simple centered) * * order: * 'inside-out' (stream) * 'default' (input order) ************************************/ //============================================================ function chart(selection) { selection.each(function(data) { var availableWidth = width - margin.left - margin.right, availableHeight = height - margin.top - margin.bottom, container = d3.select(this); //------------------------------------------------------------ // Setup Scales x = scatter.xScale(); y = scatter.yScale(); //------------------------------------------------------------ // Injecting point index into each point because d3.layout.stack().out does not give index // ***Also storing getY(d,i) as stackedY so that it can be set to 0 if series is disabled data = data.map(function(aseries, i) { aseries.values = aseries.values.map(function(d, j) { d.index = j; d.stackedY = aseries.disabled ? 0 : getY(d,j); return d; }) return aseries; }); data = d3.layout.stack() .order(order) .offset(offset) .values(function(d) { return d.values }) //TODO: make values customizeable in EVERY model in this fashion .x(getX) .y(function(d) { return d.stackedY }) .out(function(d, y0, y) { d.display = { y: y, y0: y0 }; }) (data); //------------------------------------------------------------ // Setup containers and skeleton of chart var wrap = container.selectAll('g.nv-wrap.nv-stackedarea').data([data]); var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-stackedarea'); var defsEnter = wrapEnter.append('defs'); var gEnter = wrapEnter.append('g'); var g = wrap.select('g'); gEnter.append('g').attr('class', 'nv-areaWrap'); gEnter.append('g').attr('class', 'nv-scatterWrap'); wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')'); //------------------------------------------------------------ scatter .width(availableWidth) .height(availableHeight) .x(getX) .y(function(d) { return d.display.y + d.display.y0 }) .forceY([0]) .color(data.map(function(d,i) { return d.color || color(d, i); }).filter(function(d,i) { return !data[i].disabled })); var scatterWrap = g.select('.nv-scatterWrap') .datum(data.filter(function(d) { return !d.disabled })) d3.transition(scatterWrap).call(scatter); //scatterWrap.call(scatter); defsEnter.append('clipPath') .attr('id', 'nv-edge-clip-' + id) .append('rect'); wrap.select('#nv-edge-clip-' + id + ' rect') .attr('width', availableWidth) .attr('height', availableHeight); g .attr('clip-path', clipEdge ? 'url(#nv-edge-clip-' + id + ')' : ''); var area = d3.svg.area() .x(function(d,i) { return x(getX(d,i)) }) .y0(function(d) { return y(d.display.y0) }) .y1(function(d) { return y(d.display.y + d.display.y0) }) .interpolate(interpolate); var zeroArea = d3.svg.area() .x(function(d,i) { return x(getX(d,i)) }) .y0(function(d) { return y(d.display.y0) }) .y1(function(d) { return y(d.display.y0) }); var path = g.select('.nv-areaWrap').selectAll('path.nv-area') .data(function(d) { return d }); //.data(function(d) { return d }, function(d) { return d.key }); path.enter().append('path').attr('class', function(d,i) { return 'nv-area nv-area-' + i }) .on('mouseover', function(d,i) { d3.select(this).classed('hover', true); dispatch.areaMouseover({ point: d, series: d.key, pos: [d3.event.pageX, d3.event.pageY], seriesIndex: i }); }) .on('mouseout', function(d,i) { d3.select(this).classed('hover', false); dispatch.areaMouseout({ point: d, series: d.key, pos: [d3.event.pageX, d3.event.pageY], seriesIndex: i }); }) .on('click', function(d,i) { d3.select(this).classed('hover', false); dispatch.areaClick({ point: d, series: d.key, pos: [d3.event.pageX, d3.event.pageY], seriesIndex: i }); }) d3.transition(path.exit()) //path.exit() .attr('d', function(d,i) { return zeroArea(d.values,i) }) .remove(); path .style('fill', function(d,i){ return d.color || color(d, i) }) .style('stroke', function(d,i){ return d.color || color(d, i) }); d3.transition(path) //path .attr('d', function(d,i) { return area(d.values,i) }) //============================================================ // Event Handling/Dispatching (in chart's scope) //------------------------------------------------------------ scatter.dispatch.on('elementMouseover.area', function(e) { g.select('.nv-chart-' + id + ' .nv-area-' + e.seriesIndex).classed('hover', true); }); scatter.dispatch.on('elementMouseout.area', function(e) { g.select('.nv-chart-' + id + ' .nv-area-' + e.seriesIndex).classed('hover', false); }); //============================================================ }); return chart; } //============================================================ // Event Handling/Dispatching (out of chart's scope) //------------------------------------------------------------ scatter.dispatch.on('elementClick.area', function(e) { dispatch.areaClick(e); }) scatter.dispatch.on('elementMouseover.tooltip', function(e) { e.pos = [e.pos[0] + margin.left, e.pos[1] + margin.top], dispatch.tooltipShow(e); }); scatter.dispatch.on('elementMouseout.tooltip', function(e) { dispatch.tooltipHide(e); }); //============================================================ //============================================================ // Global getters and setters //------------------------------------------------------------ chart.dispatch = dispatch; chart.scatter = scatter; d3.rebind(chart, scatter, 'interactive', 'size', 'xScale', 'yScale', 'zScale', 'xDomain', 'yDomain', 'sizeDomain', 'forceX', 'forceY', 'forceSize', 'clipVoronoi', 'clipRadius'); chart.x = function(_) { if (!arguments.length) return getX; getX = d3.functor(_); return chart; }; chart.y = function(_) { if (!arguments.length) return getY; getY = d3.functor(_); return 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.clipEdge = function(_) { if (!arguments.length) return clipEdge; clipEdge = _; return chart; }; chart.color = function(_) { if (!arguments.length) return color; color = nv.utils.getColor(_); return chart; }; chart.offset = function(_) { if (!arguments.length) return offset; offset = _; return chart; }; chart.order = function(_) { if (!arguments.length) return order; order = _; return chart; }; //shortcut for offset + order chart.style = function(_) { if (!arguments.length) return style; style = _; switch (style) { case 'stack': chart.offset('zero'); chart.order('default'); break; case 'stream': chart.offset('wiggle'); chart.order('inside-out'); break; case 'stream-center': chart.offset('silhouette'); chart.order('inside-out'); break; case 'expand': chart.offset('expand'); chart.order('default'); break; } return chart; }; chart.interpolate = function(_) { if (!arguments.length) return interpolate; interpolate = _; return interpolate; }; //============================================================ return chart; }