将堆积的条形图旋转为堆积的柱形图Amchart

Question

我正在堆积条形图，并想通过将条形图旋转90度将其转换为堆积柱状图。我该怎么做。我曾尝试添加chart.rotate = true但它不起作用。感谢帮助

    am4core.ready(function() {

        // Themes begin
        am4core.useTheme(am4themes_animated);
        // Themes end

        // Create chart instance
        var chart = am4core.create("chartdiv", am4charts.XYChart);
        chart.rotate = true;
        // Add data
        chart.data = [{
            "year": 2005,
            "income": 23.5,
            "expenses": 18.1
        }, {
            "year": 2006,
            "income": 26.2,
            "expenses": 22.8
        }, {
            "year": 2007,
            "income": 30.1,
            "expenses": 23.9
        }, {
            "year": 2008,
            "income": 29.5,
            "expenses": 25.1
        }, {
            "year": 2009,
            "income": 24.6,
            "expenses": 25
        }];

        // Create axes
        var categoryAxis = chart.yAxes.push(new am4charts.CategoryAxis());
        categoryAxis.dataFields.category = "year";
        categoryAxis.numberFormatter.numberFormat = "#";
        categoryAxis.renderer.inversed = false;
        categoryAxis.renderer.grid.template.location = 0;
        categoryAxis.renderer.cellStartLocation = 0.1;
        categoryAxis.renderer.cellEndLocation = 0.9;

        var valueAxis = chart.xAxes.push(new am4charts.ValueAxis());
        valueAxis.renderer.opposite = true;

        // Create series
        function createSeries(field, name) {
            var series = chart.series.push(new am4charts.ColumnSeries());
            series.dataFields.valueX = field;
            series.dataFields.categoryY = "year";
            series.name = name;
            series.columns.template.tooltipText = "{name}: [bold]{valueX}[/]";
            series.columns.template.height = am4core.percent(100);
            series.sequencedInterpolation = true;

            var valueLabel = series.bullets.push(new am4charts.LabelBullet());
            valueLabel.label.text = "{valueX}";
            valueLabel.label.horizontalCenter = "left";
            valueLabel.label.dx = 10;
            valueLabel.label.hideOversized = false;
            valueLabel.label.truncate = false;

            var categoryLabel = series.bullets.push(new am4charts.LabelBullet());
            categoryLabel.label.text = "{name}";
            categoryLabel.label.horizontalCenter = "right";
            categoryLabel.label.dx = -10;
            categoryLabel.label.fill = am4core.color("#fff");
            categoryLabel.label.hideOversized = false;
            categoryLabel.label.truncate = false;
        }
        createSeries("income", "Income");
        createSeries("expenses", "Expenses");

    });

预期结果是堆积柱形图，而我得到的是堆积条形图