DefinitelyTyped/nvd3/test/lineChart.ts

namespace nvd3_test_lineChart {
    // Wrapping in nv.addGraph allows for '0 timeout render', stores rendered charts in nv.graphs, and may do more in the future... it's NOT required
    var chart;
    var data;

    var randomizeFillOpacity = function () {
        var rand = Math.random();
        for (var i = 0; i < 100; i++) { // modify sine amplitude
            data[4].values[i].y = Math.sin(i / (5 + rand)) * .4 * rand - .25;
        }
        data[4].fillOpacity = rand;
        chart.update();
    };

    nv.addGraph(function () {
        chart = nv.models.lineChart()
            .options({
                transitionDuration: 300,
                useInteractiveGuideline: true
            })
            ;

        // chart sub-models (ie. xAxis, yAxis, etc) when accessed directly, return themselves, not the parent chart, so need to chain separately
        chart.xAxis
            .axisLabel("Time (s)")
            .tickFormat(d3.format(',.1f'))
            .staggerLabels(true)
            ;

        chart.yAxis
            .axisLabel('Voltage (v)')
            .tickFormat(function (d) {
                if (d == null) {
                    return 'N/A';
                }
                return d3.format(',.2f')(d);
            })
            ;

        data = sinAndCos();

        d3.select('#chart1').append('svg')
            .datum(data)
            .call(chart);

        nv.utils.windowResize(chart.update);

        return chart;
    });

    function sinAndCos() {
        var sin = [],
            sin2 = [],
            cos = [],
            rand = [],
            rand2 = []
            ;

        for (var i = 0; i < 100; i++) {
            sin.push({ x: i, y: i % 10 == 5 ? null : Math.sin(i / 10) }); //the nulls are to show how defined works
            sin2.push({ x: i, y: Math.sin(i / 5) * 0.4 - 0.25 });
            cos.push({ x: i, y: .5 * Math.cos(i / 10) });
            rand.push({ x: i, y: Math.random() / 10 });
            rand2.push({ x: i, y: Math.cos(i / 10) + Math.random() / 10 })
        }

        return [
            {
                area: true,
                values: sin,
                key: "Sine Wave",
                color: "#ff7f0e",
                strokeWidth: 4,
                classed: 'dashed'
            },
            {
                values: cos,
                key: "Cosine Wave",
                color: "#2ca02c"
            },
            {
                values: rand,
                key: "Random Points",
                color: "#2222ff"
            },
            {
                values: rand2,
                key: "Random Cosine",
                color: "#667711",
                strokeWidth: 3.5
            },
            {
                area: true,
                values: sin2,
                key: "Fill opacity",
                color: "#EF9CFB",
                fillOpacity: .1
            }
        ];
    }

}