如何使用JFreeChart绘制曲线？

Question

我设法绘制了一个线性图。以下是代码：

private JPanel createGraph() {

        JPanel panel = new JPanel();
        XYSeries series = new XYSeries("MyGraph");
        series.add(0, 1);
        series.add(1, 2);
        series.add(2, 5);
        series.add(7, 8);
        series.add(9, 10);


        XYSeriesCollection dataset = new XYSeriesCollection();
        dataset.addSeries(series);

        JFreeChart chart = ChartFactory.createXYLineChart(
                "XY Chart",
                "x-axis",
                "y-axis",
                dataset, 
                PlotOrientation.VERTICAL,
                true,
                true,
                false
                );
        ChartPanel chartPanel = new ChartPanel(chart);


        panel.add(chartPanel);

        return panel;
    }

然而，它不是平滑的曲线，而是直线。我怎么能顺利度过呢？

Answer 1

我相信您正在寻找XYSplineRenderer 你应该可以做到

chart.getXYPlot().setRenderer(new XYSplineRenderer());

构建图表后

。