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jFreeChart APIを使用して、スライダーの移動時に2つのバー間のギャップ幅がスライダーの値に応じて増減するように1つのアプリケーションを作成しています。しかし、グラフが異なると、データ項目の余白プロパティが異なることがわかりました。問題を実証するために、次のコードを添付しています:-

import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.Dimension;

import javax.swing.BorderFactory;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.LegendItemCollection;
import org.jfree.chart.axis.DateAxis;
import org.jfree.chart.axis.SubCategoryAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.GroupedStackedBarRenderer;
import org.jfree.data.KeyToGroupMap;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;

public class DomainTranslateDemo extends ApplicationFrame {

    private static class DemoPanel extends JPanel implements ChangeListener {

        private static int SLIDER_INITIAL_VALUE = 50;
        private JSlider slider;
        private DateAxis domainAxis;
        private int lastValue = SLIDER_INITIAL_VALUE;
        private GroupedStackedBarRenderer renderer;

        // one month (milliseconds, seconds, minutes, hours, days)
        private int delta = 1000 * 60 * 60 * 24 * 30;

        public DemoPanel() {
            super(new BorderLayout());
            final CategoryDataset dataset = createDataset();
            final JFreeChart chart = createChart(dataset);
            final ChartPanel chartPanel = new ChartPanel(chart);
            Dimension Dim = new Dimension(590, 350);
            chartPanel.setPreferredSize(Dim);
            add(chartPanel);

            JPanel dashboard = new JPanel(new BorderLayout());
            dashboard.setBorder(BorderFactory.createEmptyBorder(0, 4, 4, 4));   

            this.slider = new JSlider(0, 100, SLIDER_INITIAL_VALUE);
            this.slider.addChangeListener(this);
            dashboard.add(this.slider);
            add(dashboard, BorderLayout.SOUTH);
        }

        private CategoryDataset createDataset() {
            DefaultCategoryDataset result = new DefaultCategoryDataset();

            result.addValue(1.5, "5YEUR", "5Y");
            result.addValue(-1.5, "5YUSD", "5Y");

            result.addValue(0.5, "5Yx5YEUR", "5Yx5Y");
            result.addValue(-0.5, "5Yx5YUSD", "5Yx5Y");

            result.addValue(1.5, "10Yx5YEUR", "10Yx5Y");
            result.addValue(-1.5, "10Yx5YUSD", "10Yx5Y");

            result.addValue(1.5, "15Yx5YEUR", "15Yx5Y");
            result.addValue(-1.5, "15Yx5YUSD", "15Yx5Y");

            result.addValue(1.5, "20Yx5YEUR", "20Yx5Y");
            result.addValue(-1.5, "20Yx5YUSD", "20Yx5Y");

            result.addValue(1.5, "20Yx5YEUR", "25Yx5Y");
            result.addValue(-1.5, "20Yx5YUSD", "25Yx5Y");

            //result.addValue(11.9, "Product 3 (US)", "Jan 04");

            return result;
        }

        private JFreeChart createChart(final CategoryDataset dataset) {

            final JFreeChart chart = ChartFactory.createStackedBarChart(
                    "Max Bar Width", // chart title
                    "Category", // domain axis label
                    "Value", // range axis label
                    dataset, // data
                    PlotOrientation.VERTICAL, // the plot orientation
                    true, // legend
                    true, // tooltips
                    false // urls
                    );

            renderer = new GroupedStackedBarRenderer();
            KeyToGroupMap map = new KeyToGroupMap("G1");
            map.mapKeyToGroup("5YEUR", "G1");
            map.mapKeyToGroup("5YUSD", "G1");

            map.mapKeyToGroup("5Yx5YEUR", "G2");
            map.mapKeyToGroup("5Yx5YUSD", "G2");

            map.mapKeyToGroup("10Yx5YEUR", "G3");
            map.mapKeyToGroup("10Yx5YUSD", "G3");

            map.mapKeyToGroup("15Yx5YEUR", "G4");
            map.mapKeyToGroup("15Yx5YUSD", "G4");

            map.mapKeyToGroup("20Yx5YEUR", "G5");
            map.mapKeyToGroup("20Yx5YUSD", "G5");

            map.mapKeyToGroup("25Yx5YEUR", "G6");
            map.mapKeyToGroup("25Yx5YUSD", "G6");


            renderer.setSeriesToGroupMap(map);
            double maxBarWidth = renderer.getMaximumBarWidth();

            //renderer.setMaximumBarWidth(1);
            renderer.setItemMargin(-20);

           /* SubCategoryAxis domainAxis = new SubCategoryAxis("Product / Month");
            domainAxis.setCategoryMargin(0.05);
            domainAxis.addSubCategory("Product 1");
            domainAxis.addSubCategory("Product 2");
            domainAxis.addSubCategory("Product 3");*/

            CategoryPlot plot = (CategoryPlot) chart.getPlot();
            //plot.setDomainAxis(domainAxis);
            plot.setRenderer(renderer);
            plot.setFixedLegendItems(createLegendItems());

            return chart;

        }

        /**
         * @return The legend items.
         */
        private LegendItemCollection createLegendItems() {
            LegendItemCollection result = new LegendItemCollection();
            return result;
        }

        @Override
        public void stateChanged(ChangeEvent event) {
            int value = this.slider.getValue();
           /* long minimum = domainAxis.getMinimumDate().getTime();
            long maximum = domainAxis.getMaximumDate().getTime();
            if (value<lastValue) { // left
                minimum = minimum - delta;
                maximum = maximum - delta;
            } else { // right
                minimum = minimum + delta;
                maximum = maximum + delta;
            }
            DateRange range = new DateRange(minimum,maximum);
            domainAxis.setRange(range);*/
            System.out.println("value:"+value);
            renderer.setItemMargin(value/100.0);

        }

    }

    public DomainTranslateDemo(String title) {
        super(title);
        setContentPane(new DemoPanel());
    }

    public static JPanel createDemoPanel() {
        return new DemoPanel();
    }

    public static void main(String[] args) {
        DomainTranslateDemo demo = new DomainTranslateDemo("Translate Demo");
        demo.pack();
        RefineryUtilities.centerFrameOnScreen(demo);
        demo.setVisible(true);
    }

} 

上記のコードから、スライダー値 = 0 で 2 つのバーが互いに接触していないことが明らかです。同様に、100% になる前にバーが消えています。1 つのアプリケーションが必要です。

スライダーの最小値 = すべてのバーが互いに接触する必要がある

スライダーの最大値について = バー間の最大距離を表示します。

これはすべて、アイテムの余白プロパティの最小値と最大値に依存します。これに関連するいくつかのドキュメントを検索しましたが、これに関する説得力のある計算は見つかりませんでした。

この点に関するあらゆる種類の提案は本当に役に立ちます。

ありがとう

4

1 に答える 1

1

負の範囲をもっと使用する必要があると思います-50, 10

画像

SSCCE:

import java.awt.BorderLayout;
import java.awt.Dimension;
import javax.swing.BorderFactory;
import javax.swing.JPanel;
import javax.swing.JSlider;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
import org.jfree.chart.ChartFactory;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.LegendItemCollection;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.plot.PlotOrientation;
import org.jfree.chart.renderer.category.GroupedStackedBarRenderer;
import org.jfree.data.KeyToGroupMap;
import org.jfree.data.category.CategoryDataset;
import org.jfree.data.category.DefaultCategoryDataset;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RefineryUtilities;

/** @see http://stackoverflow.com/a/17342522/230513 */
public class DomainTranslateDemo extends ApplicationFrame {

    private static class DemoPanel extends JPanel implements ChangeListener {

        private static int SLIDER_INITIAL_VALUE = -42;
        private static final double INCREMENT = 1 / 10.0;
        private JSlider slider;
        private GroupedStackedBarRenderer renderer;

        public DemoPanel() {
            super(new BorderLayout());
            final CategoryDataset dataset = createDataset();
            final JFreeChart chart = createChart(dataset);
            final ChartPanel chartPanel = new ChartPanel(chart);
            Dimension Dim = new Dimension(590, 350);
            chartPanel.setPreferredSize(Dim);
            add(chartPanel);

            JPanel dashboard = new JPanel(new BorderLayout());
            dashboard.setBorder(BorderFactory.createEmptyBorder(0, 4, 4, 4));

            this.slider = new JSlider(-50, 10, SLIDER_INITIAL_VALUE);
            this.slider.addChangeListener(this);
            dashboard.add(this.slider);
            add(dashboard, BorderLayout.SOUTH);
        }

        private CategoryDataset createDataset() {
            DefaultCategoryDataset result = new DefaultCategoryDataset();
            result.addValue(1.5, "5YEUR", "5Y");
            result.addValue(-1.5, "5YUSD", "5Y");
            result.addValue(0.5, "5Yx5YEUR", "5Yx5Y");
            result.addValue(-0.5, "5Yx5YUSD", "5Yx5Y");
            result.addValue(1.5, "10Yx5YEUR", "10Yx5Y");
            result.addValue(-1.5, "10Yx5YUSD", "10Yx5Y");
            result.addValue(1.5, "15Yx5YEUR", "15Yx5Y");
            result.addValue(-1.5, "15Yx5YUSD", "15Yx5Y");
            result.addValue(1.5, "20Yx5YEUR", "20Yx5Y");
            result.addValue(-1.5, "20Yx5YUSD", "20Yx5Y");
            result.addValue(1.5, "20Yx5YEUR", "25Yx5Y");
            result.addValue(-1.5, "20Yx5YUSD", "25Yx5Y");
            return result;
        }

        private JFreeChart createChart(final CategoryDataset dataset) {

            final JFreeChart chart = ChartFactory.createStackedBarChart(
                "Max Bar Width", // chart title
                "Category", // domain axis label
                "Value", // range axis label
                dataset, // data
                PlotOrientation.VERTICAL, // the plot orientation
                true, // legend
                true, // tooltips
                false // urls
                );

            renderer = new GroupedStackedBarRenderer();
            KeyToGroupMap map = new KeyToGroupMap("G1");
            map.mapKeyToGroup("5YEUR", "G1");
            map.mapKeyToGroup("5YUSD", "G1");
            map.mapKeyToGroup("5Yx5YEUR", "G2");
            map.mapKeyToGroup("5Yx5YUSD", "G2");
            map.mapKeyToGroup("10Yx5YEUR", "G3");
            map.mapKeyToGroup("10Yx5YUSD", "G3");
            map.mapKeyToGroup("15Yx5YEUR", "G4");
            map.mapKeyToGroup("15Yx5YUSD", "G4");
            map.mapKeyToGroup("20Yx5YEUR", "G5");
            map.mapKeyToGroup("20Yx5YUSD", "G5");
            map.mapKeyToGroup("25Yx5YEUR", "G6");
            map.mapKeyToGroup("25Yx5YUSD", "G6");
            renderer.setSeriesToGroupMap(map);
            double maxBarWidth = renderer.getMaximumBarWidth();
            renderer.setItemMargin(SLIDER_INITIAL_VALUE * INCREMENT);

            CategoryPlot plot = (CategoryPlot) chart.getPlot();
            plot.setRenderer(renderer);
            plot.setFixedLegendItems(createLegendItems());
            return chart;
        }

        private LegendItemCollection createLegendItems() {
            LegendItemCollection result = new LegendItemCollection();
            return result;
        }

        @Override
        public void stateChanged(ChangeEvent event) {
            int value = slider.getValue();
            System.out.println("value:" + value);
            renderer.setItemMargin(value * INCREMENT);
        }
    }

    public DomainTranslateDemo(String title) {
        super(title);
        setContentPane(new DemoPanel());
    }

    public static JPanel createDemoPanel() {
        return new DemoPanel();
    }

    public static void main(String[] args) {
        DomainTranslateDemo demo = new DomainTranslateDemo("Translate Demo");
        demo.pack();
        RefineryUtilities.centerFrameOnScreen(demo);
        demo.setVisible(true);
    }
}
于 2013-06-27T11:57:30.373 に答える