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JSci is a set of open source Java packages. The aim is to encapsulate scientific methods/principles in the most natural way possible. As such they should greatly aid the development of scientific based software. It offers: abstract math interfaces, linear algebra (support for various matrix and vector types), statistics (including probability distributions), wavelets, newtonian mechanics, chart/graph components (AWT and Swing), MathML DOM implementation, ... Note: some packages, like javax.comm, for the astro and instruments package aren't listed as dependencies (not available).

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package JSci.tests;

import java.util.Map;
import java.util.HashMap;
import junit.framework.*;
import JSci.maths.*;

/**
* Testcase for Fourier methods.
* @author Mark Hale
*/
public class FourierTest extends TestCase {
	private static final int N=128;
	private double[] signal;

	public static void main(String arg[]) {
                junit.textui.TestRunner.run(suite());
        }
	public static Test suite() {
		double[][] signals = new double[][] {
			gaussian(N, 1.0, 8.0),
			topHat(N, 1.0),
			constant(N, 1.0),
			square(N, 1.0),
			triangle(N, 1.0),
			sine(N, 1.0, 16)
		};
		TestSuite suite = new TestSuite(FourierTest.class.toString());
		for(int i=0; i