,
        {key: "Six", y: 3},
        {key: "Seven", y: 0.5}
    ];
    var testdata2 = [
        {key: "One", y: 5},
        {key: "Two", y: 2},
        {key: "Three", y: 9},
        {key: "Four", y: 7},
        {key: "Five", y: 4},
        {key: "Six", y: 3},
        {key: "Seven", y: 0.5}
    ];

    var height = 350;
    var width = 350;

    nv.addGraph(function() {
        var chart = nv.models.pieChart()
            .x(function(d) { return d.key })
            .y(function(d) { return d.y })
         