/*
* Created on 25-Jul-2006
*/
package ca.nengo.model.impl;
import junit.framework.TestCase;
import ca.nengo.dynamics.DynamicalSystem;
import ca.nengo.dynamics.Integrator;
import ca.nengo.dynamics.impl.EulerIntegrator;
import ca.nengo.dynamics.impl.SimpleLTISystem;
import ca.nengo.math.impl.GaussianPDF;
import ca.nengo.model.Noise;
import ca.nengo.model.Units;
import ca.nengo.plot.Plotter;
import ca.nengo.util.MU;
public class NoiseFactoryTest extends TestCase {
protected void setUp() throws Exception {
super.setUp();
}
public void testNothing() {
}
//functional test ...
public static void main(String[] args) {
float tau = .01f;
DynamicalSystem dynamics = new SimpleLTISystem(new float[]{-1f/tau}, new float[][]{new float[]{1f/tau}}, MU.I(1), new float[1], new Units[]{Units.UNK});
Integrator integrator = new EulerIntegrator(.0001f);
// Noise noise = NoiseFactory.makeRandomNoise(1000, new GaussianPDF(0, 1));
Noise noise = NoiseFactory.makeRandomNoise(1000, new GaussianPDF(0, 1), dynamics, integrator);
// Noise noise = NoiseFactory.makeNullNoise(1);
// Noise noise = NoiseFactory.makeExplicitNoise(new Function[]{new FourierFunction(1, 10, 1, -1)});
float elapsedTime = .001f;
int steps = 1000;
float[] output = new float[steps];
for (int i = 0; i < steps; i++) {
output[i] = noise.getValue(i*elapsedTime, (i+1)*elapsedTime, 1);
}
Plotter.plot(output, "noise");
}
}