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 large series chart.
*/
public class LargeSeriesExample {
/**
* The main method.
*
* @param args
* the arguments
*/
public static void main(String[] args) {
Display display = new Display();
Shell shell = new Shell(display);
shell.setText("Large Series");
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("Large Series");
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(getSeries());
lineSeries.setSymbolType(PlotSymbolType.NONE);
// adjust the axis range
chart.getAxisSet().adjustRange();
return chart;
}
private static double[] getSeries() {
double[] series = new double[1048576];
for (int i = 0; i < series.length; i++) {
series[i] = Math.sin(i * 33 * Math.PI / series.length)
+ Math.sin(i * 15 * Math.PI / series.length);
}
return series;
}
}