html, body, #container {

    width: 100%;

    height: 100%;

    margin: 0;

    padding: 0;

}

anychart.onDocumentReady(function () {

​

    // data set

    var data = [

        {x: "Winter", value: 10},

        {x: "Spring", value: 12},

        {x: "Summer", value: 18},

        {x: "Fall", value: 11},

    ];

​

    // create and configure a pie chart

    var chart1 = anychart.pie(data);

    chart1.innerRadius("75%");

​

    // create a bar chart

    var chart2 = anychart.bar(data);

​

    // set bar chart as the center content of a pie chart

    chart1.center().content(chart2);

​

    chart1.title("Donut Chart: Chart in the center");

    chart1.container("container");

    chart1.draw();

});