nv.models.ohlcBar = function() { //============================================================ // Public Variables with Default Settings //------------------------------------------------------------ var margin = {top: 0, right: 0, bottom: 0, left: 0} , width = 960 , height = 500 , id = Math.floor(Math.random() * 10000) //Create semi-unique ID in case user doesn't select one , x = d3.scale.linear() , y = d3.scale.linear() , getX = function(d) { return d.x } , getY = function(d) { return d.y } , getOpen = function(d) { return d.open } , getClose = function(d) { return d.close } , getHigh = function(d) { return d.high } , getLow = function(d) { return d.low } , forceX = [] , forceY = [] , padData = false // If true, adds half a data points width to front and back, for lining up a line chart with a bar chart , clipEdge = true , color = nv.utils.defaultColor() , xDomain , yDomain , dispatch = d3.dispatch('chartClick', 'elementClick', 'elementDblClick', 'elementMouseover', 'elementMouseout') ; //============================================================ //============================================================ // Private Variables //------------------------------------------------------------ //TODO: store old scales for transitions //============================================================ 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 .domain(xDomain || d3.extent(data[0].values.map(getX).concat(forceX) )); if (padData) x.range([availableWidth * .5 / data[0].values.length, availableWidth * (data[0].values.length - .5) / data[0].values.length ]); else x.range([0, availableWidth]); y .domain(yDomain || [ d3.min(data[0].values.map(getLow).concat(forceY)), d3.max(data[0].values.map(getHigh).concat(forceY)) ]) .range([availableHeight, 0]); // If scale's domain don't have a range, slightly adjust to make one... so a chart can show a single data point if (x.domain()[0] === x.domain()[1] || y.domain()[0] === y.domain()[1]) singlePoint = true; if (x.domain()[0] === x.domain()[1]) x.domain()[0] ? x.domain([x.domain()[0] - x.domain()[0] * 0.01, x.domain()[1] + x.domain()[1] * 0.01]) : x.domain([-1,1]); if (y.domain()[0] === y.domain()[1]) y.domain()[0] ? y.domain([y.domain()[0] + y.domain()[0] * 0.01, y.domain()[1] - y.domain()[1] * 0.01]) : y.domain([-1,1]); //------------------------------------------------------------ //------------------------------------------------------------ // Setup containers and skeleton of chart var wrap = d3.select(this).selectAll('g.nv-wrap.nv-ohlcBar').data([data[0].values]); var wrapEnter = wrap.enter().append('g').attr('class', 'nvd3 nv-wrap nv-ohlcBar'); var defsEnter = wrapEnter.append('defs'); var gEnter = wrapEnter.append('g'); var g = wrap.select('g'); gEnter.append('g').attr('class', 'nv-ticks'); wrap.attr('transform', 'translate(' + margin.left + ',' + margin.top + ')'); //------------------------------------------------------------ container .on('click', function(d,i) { dispatch.chartClick({ data: d, index: i, pos: d3.event, id: id }); }); defsEnter.append('clipPath') .attr('id', 'nv-chart-clip-path-' + id) .append('rect'); wrap.select('#nv-chart-clip-path-' + id + ' rect') .attr('width', availableWidth) .attr('height', availableHeight); g .attr('clip-path', clipEdge ? 'url(#nv-chart-clip-path-' + id + ')' : ''); var ticks = wrap.select('.nv-ticks').selectAll('.nv-tick') .data(function(d) { return d }); ticks.exit().remove(); var ticksEnter = ticks.enter().append('path') .attr('class', function(d,i,j) { return (getOpen(d,i) > getClose(d,i) ? 'nv-tick negative' : 'nv-tick positive') + ' nv-tick-' + j + '-' + i }) .attr('d', function(d,i) { var w = (availableWidth / data[0].values.length) * .9; return 'm0,0l0,' + (y(getOpen(d,i)) - y(getHigh(d,i))) + 'l' + (-w/2) + ',0l' + (w/2) + ',0l0,' + (y(getLow(d,i)) - y(getOpen(d,i))) + 'l0,' + (y(getClose(d,i)) - y(getLow(d,i))) + 'l' + (w/2) + ',0l' + (-w/2) + ',0z'; }) .attr('transform', function(d,i) { return 'translate(' + x(getX(d,i)) + ',' + y(getHigh(d,i)) + ')'; }) //.attr('fill', function(d,i) { return color[0]; }) //.attr('stroke', function(d,i) { return color[0]; }) //.attr('x', 0 ) //.attr('y', function(d,i) { return y(Math.max(0, getY(d,i))) }) //.attr('height', function(d,i) { return Math.abs(y(getY(d,i)) - y(0)) }) .on('mouseover', function(d,i) { d3.select(this).classed('hover', true); dispatch.elementMouseover({ point: d, series: data[0], pos: [x(getX(d,i)), y(getY(d,i))], // TODO: Figure out why the value appears to be shifted pointIndex: i, seriesIndex: 0, e: d3.event }); }) .on('mouseout', function(d,i) { d3.select(this).classed('hover', false); dispatch.elementMouseout({ point: d, series: data[0], pointIndex: i, seriesIndex: 0, e: d3.event }); }) .on('click', function(d,i) { dispatch.elementClick({ //label: d[label], value: getY(d,i), data: d, index: i, pos: [x(getX(d,i)), y(getY(d,i))], e: d3.event, id: id }); d3.event.stopPropagation(); }) .on('dblclick', function(d,i) { dispatch.elementDblClick({ //label: d[label], value: getY(d,i), data: d, index: i, pos: [x(getX(d,i)), y(getY(d,i))], e: d3.event, id: id }); d3.event.stopPropagation(); }); ticks .attr('class', function(d,i,j) { return (getOpen(d,i) > getClose(d,i) ? 'nv-tick negative' : 'nv-tick positive') + ' nv-tick-' + j + '-' + i }) d3.transition(ticks) .attr('transform', function(d,i) { return 'translate(' + x(getX(d,i)) + ',' + y(getHigh(d,i)) + ')'; }) .attr('d', function(d,i) { var w = (availableWidth / data[0].values.length) * .9; return 'm0,0l0,' + (y(getOpen(d,i)) - y(getHigh(d,i))) + 'l' + (-w/2) + ',0l' + (w/2) + ',0l0,' + (y(getLow(d,i)) - y(getOpen(d,i))) + 'l0,' + (y(getClose(d,i)) - y(getLow(d,i))) + 'l' + (w/2) + ',0l' + (-w/2) + ',0z'; }) //.attr('width', (availableWidth / data[0].values.length) * .9 ) //d3.transition(ticks) //.attr('y', function(d,i) { return y(Math.max(0, getY(d,i))) }) //.attr('height', function(d,i) { return Math.abs(y(getY(d,i)) - y(0)) }); //.order(); // not sure if this makes any sense for this model }); return chart; } //============================================================ // Expose Public Variables //------------------------------------------------------------ chart.dispatch = dispatch; chart.x = function(_) { if (!arguments.length) return getX; getX = _; return chart; }; chart.y = function(_) { if (!arguments.length) return getY; getY = _; return chart; }; chart.open = function(_) { if (!arguments.length) return getOpen; getOpen = _; return chart; }; chart.close = function(_) { if (!arguments.length) return getClose; getClose = _; return chart; }; chart.high = function(_) { if (!arguments.length) return getHigh; getHigh = _; return chart; }; chart.low = function(_) { if (!arguments.length) return getLow; getLow = _; 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.xScale = function(_) { if (!arguments.length) return x; x = _; return chart; }; chart.yScale = function(_) { if (!arguments.length) return y; y = _; return chart; }; chart.xDomain = function(_) { if (!arguments.length) return xDomain; xDomain = _; return chart; }; chart.yDomain = function(_) { if (!arguments.length) return yDomain; yDomain = _; return chart; }; chart.forceX = function(_) { if (!arguments.length) return forceX; forceX = _; return chart; }; chart.forceY = function(_) { if (!arguments.length) return forceY; forceY = _; return chart; }; chart.padData = function(_) { if (!arguments.length) return padData; padData = _; 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.id = function(_) { if (!arguments.length) return id; id = _; return chart; }; //============================================================ return chart; }