test

            /**  var vis = d3.select('#'+chartName),
                    WIDTH = 300,
                    HEIGHT = 200,
                    MARGINS = {
                        top: 20,
                        right: 20,
                        bottom: 20,
                        left: 100
                    },
                    xRange = d3.scale.linear().range([MARGINS.left, WIDTH - MARGINS.right]).domain([d3.min(lineData, function(d) {
                        return d.x;
                    }), d3.max(lineData, function(d) {
                        return d.x;
                    })]),
                    yRange = d3.scale.linear().range([HEIGHT - MARGINS.top, MARGINS.bottom]).domain([d3.min(lineData, function(d) {
                        if(d.y2 != undefined)  return Math.min(d.y, d.y2); else
                        return d.y;
                    }), d3.max(lineData, function(d) {
                        if(d.y2 != undefined) return Math.max(d.y, d.y2); else
                        return d.y;
                    })]),
                    xAxis = d3.svg.axis().scale(xRange)
                            .tickSize(5)
                            .tickSubdivide(true),
                    yAxis = d3.svg.axis()
                            .scale(yRange)
                            .tickSize(5)
                            .orient('left')
                            .tickSubdivide(true);

            vis.append('svg:g')
                    .attr('class', 'x axis')
                    .attr('transform', 'translate(0,' + (HEIGHT - MARGINS.bottom) + ')')
                    .call(xAxis);

            vis.append('svg:g')
                    .attr('class', 'y axis')
                    .attr('transform', 'translate(' + (MARGINS.left) + ',0)')
                    .call(yAxis);

            var lineFunc = d3.svg.line()
                    .x(function (d) {
                        return xRange(d.x);
                    })
                    .y(function (d) {
                        return yRange(d.y);
                    })
                    .interpolate('linear');
            }
            var dataNest = d3.nest().key(function(d){return d.symbol;}).entries(lineData);
            dataNest.forEach(function(d){
                vis.append('svg:path')
                        .attr("class", "line")
                        .attr('d', lineFunc(lineData))
                        .attr('stroke', 'blue')
                        .attr('stroke-width', 2)
                        .attr('fill', 'none');
            })
*/