se)
                .clipVoronoi(false)
                .showVoronoi(true)
                .showYAxis(false);
        d3.select('#test2')
                .datum(sinAndCos())
                .call(chart);
        return chart;
    });

    function sinAndCos() {
        var cos = [];
        for (var i = 0; i < 5; i++) {
            cos.push({x: i, y: Math.round(.5 * Math.cos(i/10) * 100) / 100});
        }
        return [{
            values: cos,
            key: "Cosine Wave",
            color: "#2ca02c