Multiple domian axis on chart without dataset

[plunavat]

Hello,

I have a requirement to show multiple domain axis (of different units) without adding dataset
Referring to attached image, I have plotted the data on domain axis (L/S Liters Per Seconds). This is perfectly fine



https://drive.google.com/open?id=0B_v9n ... VZtT05KM00

Now I need to show another domain axis only for display. In my image say it is (m3/hr Meter3 Per Hour). Now the factor to be multiplied is 3.6. That is 1 L/S = 3.6 M3/Hr

Can anybody help me out for the same.

[paradoxoff]

Attach an AxisChangeListener to the first axis and give that listener a reference to the second axis. In the axisChanged method, retrieve the axis from the AxisChangeEvent, cast that to a ValueAxis, get its lower and upper bound, multiply both with the desired value, and set the bound for the second axis.

[plunavat]

Hello,

Thanks for your reply.
I tried a different way as shown below.
I was able to show two domain axis for XYPLOT (See Splines Tab)

Code: Select all

NumberAxis xAxis1 = new NumberAxis("X1 (X*0.2)");
			System.out.println(xAxis.getRange());
			xAxis1.setRange(xAxis.getLowerBound() * 0.2, xAxis.getUpperBound() * 0.2);
			xAxis1.setAutoRangeIncludesZero(false);

			plot.setDomainAxis(1, xAxis1);
			plot.setDomainAxisLocation(1, AxisLocation.BOTTOM_OR_RIGHT);

But The same is not getting in combine chart (See Lines Tab)

Code: Select all

// create subplot 1...
			NumberAxis xAxis1 = new NumberAxis("X1");
			xAxis.setAutoRangeIncludesZero(false);
			System.out.println(xAxis.getRange());
			xAxis1.setRange(xAxis.getLowerBound() * 0.2, xAxis.getUpperBound() * 0.2);
			xAxis1.setAutoRangeIncludesZero(false);
			combinedDomainXYPlot.setDomainAxis(1, xAxis1);
			combinedDomainXYPlot.setDomainAxisLocation(1, AxisLocation.BOTTOM_OR_RIGHT);

Could you please help..

Full Java Code

Code: Select all

/* --------------------------
 * XYSplineRendererDemo1.java
 * --------------------------
 * (C) Copyright 2007, 2009, by Object Refinery Limited.
 *
 */

import java.awt.BorderLayout;
import java.awt.Color;

import javax.swing.JPanel;
import javax.swing.JTabbedPane;

import org.jfree.chart.ChartPanel;
import org.jfree.chart.ChartUtilities;
import org.jfree.chart.JFreeChart;
import org.jfree.chart.axis.AxisLocation;
import org.jfree.chart.axis.NumberAxis;
import org.jfree.chart.plot.CombinedDomainXYPlot;
import org.jfree.chart.plot.XYPlot;
import org.jfree.chart.renderer.xy.XYLineAndShapeRenderer;
import org.jfree.chart.renderer.xy.XYSplineRenderer;
import org.jfree.data.xy.XYDataset;
import org.jfree.data.xy.XYSeries;
import org.jfree.data.xy.XYSeriesCollection;
import org.jfree.ui.ApplicationFrame;
import org.jfree.ui.RectangleInsets;
import org.jfree.ui.RefineryUtilities;

/**
 * A demo showing a line chart drawn using spline curves.
 */
public class XYSplineRendererDemo1 extends ApplicationFrame {

	static class MyDemoPanel extends DemoPanel {

		/** Dataset 1. */
		private XYDataset data1;

		/**
		 * Creates a new instance.
		 */
		public MyDemoPanel() {
			super(new BorderLayout());
			this.data1 = createSampleData();
			add(createContent());
		}

		/**
		 * Creates and returns a sample dataset. The data was randomly
		 * generated.
		 *
		 * @return a sample dataset.
		 */
		private XYDataset createSampleData() {

			XYSeries series = new XYSeries("Series 1");
			series.add(2.0, 56.27);
			series.add(3.0, 41.32);
			series.add(4.0, 31.45);
			series.add(5.0, 30.05);
			series.add(6.0, 24.69);
			series.add(7.0, 19.78);
			series.add(8.0, 20.94);
			series.add(9.0, 16.73);
			series.add(10.0, 14.21);
			series.add(11.0, 12.44);
			XYSeriesCollection result = new XYSeriesCollection(series);
			XYSeries series2 = new XYSeries("Series 2");
			series2.add(11.0, 56.27);
			series2.add(10.0, 41.32);
			series2.add(9.0, 31.45);
			series2.add(8.0, 30.05);
			series2.add(7.0, 24.69);
			series2.add(6.0, 19.78);
			series2.add(5.0, 20.94);
			series2.add(4.0, 16.73);
			series2.add(3.0, 14.21);
			series2.add(2.0, 12.44);
			result.addSeries(series2);
			return result;
		}

		/**
		 * Creates a tabbed pane for displaying sample charts.
		 *
		 * @return the tabbed pane.
		 */
		private JTabbedPane createContent() {

			JTabbedPane tabs = new JTabbedPane();
			tabs.add("Splines:", createChartPanel1());
			tabs.add("Lines:", createChartPanel2());
			return tabs;
		}

		/**
		 * Creates a chart based on the first dataset, with a fitted linear
		 * regression line.
		 *
		 * @return the chart panel.
		 */
		private ChartPanel createChartPanel1() {

			// create plot...
			NumberAxis xAxis = new NumberAxis("X");
			xAxis.setAutoRangeIncludesZero(false);
			NumberAxis yAxis = new NumberAxis("Y");
			yAxis.setAutoRangeIncludesZero(false);

			XYSplineRenderer renderer1 = new XYSplineRenderer();
			XYPlot plot = new XYPlot(this.data1, xAxis, yAxis, renderer1);
			plot.setBackgroundPaint(Color.lightGray);
			plot.setDomainGridlinePaint(Color.white);
			plot.setRangeGridlinePaint(Color.white);
			plot.setAxisOffset(new RectangleInsets(4, 4, 4, 4));

			NumberAxis xAxis1 = new NumberAxis("X1 (X*0.2)");
			System.out.println(xAxis.getRange());
			xAxis1.setRange(xAxis.getLowerBound() * 0.2, xAxis.getUpperBound() * 0.2);
			xAxis1.setAutoRangeIncludesZero(false);

			plot.setDomainAxis(1, xAxis1);
			plot.setDomainAxisLocation(1, AxisLocation.BOTTOM_OR_RIGHT);

			// create and return the chart panel...
			JFreeChart chart = new JFreeChart("XYSplineRenderer", JFreeChart.DEFAULT_TITLE_FONT, plot, true);
			addChart(chart);
			ChartUtilities.applyCurrentTheme(chart);
			ChartPanel chartPanel = new ChartPanel(chart);
			return chartPanel;

		}

		/**
		 * Creates a chart based on the second dataset, with a fitted power
		 * regression line.
		 *
		 * @return the chart panel.
		 */
		private ChartPanel createChartPanel2() {

			// create subplot 1...
			NumberAxis xAxis = new NumberAxis("X");
			xAxis.setAutoRangeIncludesZero(false);
			NumberAxis yAxis = new NumberAxis("Y");
			yAxis.setAutoRangeIncludesZero(false);

			XYLineAndShapeRenderer renderer1 = new XYLineAndShapeRenderer();
			XYPlot plot = new XYPlot(this.data1, xAxis, yAxis, renderer1);
			plot.setBackgroundPaint(Color.lightGray);
			plot.setDomainGridlinePaint(Color.white);
			plot.setRangeGridlinePaint(Color.white);
			plot.setAxisOffset(new RectangleInsets(4, 4, 4, 4));

			CombinedDomainXYPlot combinedDomainXYPlot = new CombinedDomainXYPlot(xAxis);
			combinedDomainXYPlot.add(plot);
			combinedDomainXYPlot.add(plot);

			// create subplot 1...
			NumberAxis xAxis1 = new NumberAxis("X1");
			xAxis.setAutoRangeIncludesZero(false);
			System.out.println(xAxis.getRange());
			xAxis1.setRange(xAxis.getLowerBound() * 0.2, xAxis.getUpperBound() * 0.2);
			xAxis1.setAutoRangeIncludesZero(false);
			combinedDomainXYPlot.setDomainAxis(1, xAxis1);
			combinedDomainXYPlot.setDomainAxisLocation(1, AxisLocation.BOTTOM_OR_RIGHT);

			// create and return the chart panel...
			JFreeChart chart = new JFreeChart("XYLineAndShapeRenderer", JFreeChart.DEFAULT_TITLE_FONT, combinedDomainXYPlot, true);
			addChart(chart);
			ChartUtilities.applyCurrentTheme(chart);
			ChartPanel chartPanel = new ChartPanel(chart);
			return chartPanel;

		}

	}

	/**
	 * Creates a new instance of the demo application.
	 *
	 * @param title
	 *            the frame title.
	 */
	public XYSplineRendererDemo1(String title) {
		super(title);
		JPanel content = createDemoPanel();
		getContentPane().add(content);
	}

	/**
	 * Creates a panel for the demo (used by SuperDemo.java).
	 *
	 * @return A panel.
	 */
	public static JPanel createDemoPanel() {

		return new MyDemoPanel();
	}

	/**
	 * The starting point for the regression demo.
	 *
	 * @param args
	 *            ignored.
	 */
	public static void main(String args[]) {

		XYSplineRendererDemo1 appFrame = new XYSplineRendererDemo1("JFreeChart: XYSplineRendererDemo1.java");
		appFrame.pack();
		RefineryUtilities.centerFrameOnScreen(appFrame);
		appFrame.setVisible(true);
	}

}

[paradoxoff]

A CombinedDomainXYPlot only supports a single domain axis.