Time series chart, X-axis tick marks turning into

I am using JFreeChart to create barhart and timing. For some reason, in these charts, the labels on the x-axis sometimes turn into "...". There seems to be a lot of scope for expanding the shortcuts, but instead it just cuts it all off. How can I fix this.

I tried to upload an image using the image button but it doesn't seem to work.

Here is a code with a similar setup to my project. Strangely it acted differently than what happens with my build. On mine, instead of saying "How ...", he just says "...". Ignore comments and all other raw stuff please.

package dataDisplay;

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Rectangle;
import java.awt.Toolkit;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;
import java.sql.SQLException;
import java.util.ArrayList;

import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.UIManager;

import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.renderer.category.BarRenderer;
import org.jfree.chart.renderer.category.CategoryItemRenderer;
import org.jfree.chart.renderer.category.LineAndShapeRenderer;
import org.jfree.data.category.DefaultCategoryDataset;

public class mockTest extends JPanel{

    ChartPanel chartPanel;
    JFreeChart chart;
    CategoryAxis domainAxis;
    NumberAxis rangeAxis;

    public mockTest()
    {
        //Mock data
        DefaultCategoryDataset dataset = new DefaultCategoryDataset();
        int[] times = new int[]{1,2,3,4,5,6,7,8,9,10,11,12};

        for ( int i = 0; i < times.length; i++ ){
            dataset.addValue(times[i], "Time", "Houreee" + String.valueOf(i+1));;

        }
        CategoryPlot plot = new CategoryPlot();

        //create the plot

        //add the first dataset, and render as bar values
        CategoryItemRenderer renderer = new BarRenderer();
        plot.setDataset(0,dataset);
        plot.setRenderer(0,renderer);  

        //set axis 
         domainAxis = new CategoryAxis("Time");  
        rangeAxis = new NumberAxis("Value"); 

        plot.setDomainAxis(0,domainAxis);
        plot.setRangeAxis(rangeAxis);
        chart = new JFreeChart(plot);
        chartPanel = new ChartPanel( chart ); 

           this.addComponentListener(new ComponentAdapter() {
                @Override
                /**
                 *  Makes it so it does not stretch out text. Resizes the fonts to scale with the screen width..
                 */
                public void componentResized(ComponentEvent e) {
                    chartPanel.setMaximumDrawHeight(e.getComponent().getHeight());
                    chartPanel.setMaximumDrawWidth(e.getComponent().getWidth());
                    chartPanel.setMinimumDrawWidth(e.getComponent().getWidth());
                    chartPanel.setMinimumDrawHeight(e.getComponent().getHeight());

                    // Makes the font size scale according to the width of the chart panel.
                    rangeAxis.setLabelFont(new Font("SansSerif", Font.PLAIN,e.getComponent().getWidth()/60));
                    domainAxis.setTickLabelFont(new Font("SansSerif", Font.PLAIN,e.getComponent().getWidth()/80));
                    rangeAxis.setTickLabelFont(new Font("SansSerif", Font.PLAIN,e.getComponent().getWidth()/75));
                }
            });


        this.add(chartPanel, "Center");
    }   
    public static void main (String[] args) 
    {

        // Get the default toolkit
        Toolkit toolkit = Toolkit.getDefaultToolkit();
        // Get the current screen size 
        Dimension scrnsize = toolkit.getScreenSize();
        int scrnWidth= (int)scrnsize.getWidth();
        int scrnHeight = (int) scrnsize.getHeight();

        JFrame J= new JFrame();
        JPanel jP = new JPanel();
        J.setContentPane(jP);
        J.setSize(scrnWidth, scrnHeight);
        jP.setBackground(Color.white);
        jP.setBounds(0,0,scrnWidth,scrnHeight);
        int xPercent= 50;
        int yPercent = 50;
        int widthPercent=50;
        int heightPercent=43;
        jP.setLayout(null);
        jP.setSize(scrnWidth, scrnHeight);
        mockTest b= new mockTest();


        jP.add(b);
        b.setBounds(new Rectangle((int)(scrnWidth*((double)xPercent/100)),(int)(scrnHeight*((double)yPercent/100)),(int)(scrnWidth*((double)widthPercent/100)),(int)(scrnHeight*((double)heightPercent/100))));
        J.setUndecorated(true);
        J.setVisible(true);




    }

      

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1 answer


Don't use a layout null

; let the layout manager do the job. The default layout JPanel

is FlowLayout

, which ignores your subsequent changes. In the example below

  • chartPanel

    provided GridLayout

    ; when added to the enclosing frame, the CENTER

    chart will be free to enlarge when the frame is resized.

  • Avoid unnecessary nested panels.

  • Use setExtendedState()

    to enlarge the frame.

  • If necessary, use one of the suggested approaches here to change the initial size of the chart.

  • If you decide to change Font

    , use deriveFont()

    to avoid dramatic differences in user-selected settings.



image

import java.awt.EventQueue;
import java.awt.GridLayout;
import javax.swing.JFrame;
import org.jfree.chart.ChartPanel;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.CategoryAxis;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.CategoryPlot;
import org.jfree.chart.renderer.category.BarRenderer;
import org.jfree.chart.renderer.category.CategoryItemRenderer;
import org.jfree.data.category.DefaultCategoryDataset;

/** @see https://stackoverflow.com/a/31014252/230513 */
public class Test {


    public void display() {
        DefaultCategoryDataset dataset = new DefaultCategoryDataset();
        for (int i = 0; i < 12; i++) {
            dataset.addValue(i, "Time", "Hours" + String.valueOf(i + 1));
        }
        CategoryPlot plot = new CategoryPlot();
        CategoryItemRenderer renderer = new BarRenderer();
        plot.setDataset(0, dataset);
        plot.setRenderer(0, renderer);
        CategoryAxis domainAxis = new CategoryAxis("Time");
        NumberAxis rangeAxis = new NumberAxis("Value");
        plot.setDomainAxis(0, domainAxis);
        plot.setRangeAxis(rangeAxis);
        JFreeChart chart = new JFreeChart(plot);
        ChartPanel chartPanel = new ChartPanel(chart);
        chartPanel.setLayout(new GridLayout());

        JFrame f = new JFrame();
        f.add(chartPanel);
        f.setExtendedState(f.getExtendedState() | JFrame.MAXIMIZED_BOTH);
        f.setUndecorated(true);
        f.setVisible(true);
    }

    public static void main(String[] args) {
        EventQueue.invokeLater(new Test()::display);
    }
}

      

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