package org.swtchart.examples;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.swtchart.Chart;
import org.swtchart.ILineSeries;
import org.swtchart.ILineSeries.PlotSymbolType;
import org.swtchart.ISeries.SeriesType;
/**
* An example for step chart.
*/
public class StepChartExample {
private static final double[] ySeries = { 0.0, 0.38, 0.71, 0.92, 1.0, 0.92,
0.71, 0.38, 0.0, -0.38, -0.71, -0.92, -1.0, -0.92, -0.71, -0.38 };
/**
* The main method.
*
* @param args
* the arguments
*/
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
shell.setText("Step Chart");
shell.setSize(500, 400);
shell.setLayout(new FillLayout());
createChart(shell);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
display.dispose();
}
/**
* create the chart.
*
* @param parent
* The parent composite
* @return The created chart
*/
static public Chart createChart(Composite parent) {
// create a chart
Chart chart = new Chart(parent, SWT.NONE);
// set titles
chart.getTitle().setText("Step Chart");
chart.getAxisSet().getXAxis(0).getTitle().setText("Data Points");
chart.getAxisSet().getYAxis(0).getTitle().setText("Amplitude");
// create line series
ILineSeries lineSeries = (ILineSeries) chart.getSeriesSet()
.createSeries(SeriesType.LINE, "line series");
lineSeries.setYSeries(ySeries);
lineSeries.setSymbolType(PlotSymbolType.NONE);
lineSeries.enableStep(true);
// adjust the axis range
chart.getAxisSet().adjustRange();
return chart;
}
}