Example usage for org.jfree.data.function PowerFunction2D PowerFunction2D

Introduction

In this page you can find the example usage for org.jfree.data.function PowerFunction2D PowerFunction2D.

Prototype

public PowerFunction2D(double a, double b) 

Source Link

Document

Creates a new power function.

Usage

From source file:org.jfree.data.function.PowerFunction2DTest.java

/**
 * Some tests for the constructor./* w w  w .j  a  v a2 s . c om*/
 */
@Test
public void testConstructor() {
    PowerFunction2D f = new PowerFunction2D(1.0, 2.0);
    assertEquals(1.0, f.getA(), EPSILON);
    assertEquals(2.0, f.getB(), EPSILON);
}

---

From source file:org.jfree.data.function.PowerFunction2DTest.java

/**
 * For datasets, the equals() method just checks keys and values.
 *///  www . j  a v a2s.c om
@Test
public void testEquals() {
    PowerFunction2D f1 = new PowerFunction2D(1.0, 2.0);
    PowerFunction2D f2 = new PowerFunction2D(1.0, 2.0);
    assertTrue(f1.equals(f2));
    f1 = new PowerFunction2D(2.0, 3.0);
    assertFalse(f1.equals(f2));
    f2 = new PowerFunction2D(2.0, 3.0);
    assertTrue(f1.equals(f2));
}

---

From source file:org.jfree.data.function.PowerFunction2DTest.java

/**
 * Serialize an instance, restore it, and check for equality.
 *///from   ww  w  .  j  ava2 s. c o m
@Test
public void testSerialization() {
    PowerFunction2D f1 = new PowerFunction2D(1.0, 2.0);
    PowerFunction2D f2 = (PowerFunction2D) TestUtilities.serialised(f1);
    assertEquals(f1, f2);
}

---

From source file:org.jfree.data.function.PowerFunction2DTest.java

/**
 * Objects that are equal should have the same hash code otherwise FindBugs
 * will tell on us...//from www. j a  v  a  2s  . co  m
 */
@Test
public void testHashCode() {
    PowerFunction2D f1 = new PowerFunction2D(1.0, 2.0);
    PowerFunction2D f2 = new PowerFunction2D(1.0, 2.0);
    assertEquals(f1.hashCode(), f2.hashCode());
}

---

From source file:org.operamasks.faces.render.graph.ChartRenderer.java

private XYSeries createCurveSeries(UICurve curve, XYDataset data, int index) {
    if (data.getItemCount(index) < 2) {
        throw new IllegalArgumentException("Not enough data");
    }//from  w ww .j  av a  2s  .  c om

    Key key = new Key(index, curve.getLegend());

    if (curve instanceof UIAverageLine) {
        double period = ((UIAverageLine) curve).getPeriod();
        double skip = ((UIAverageLine) curve).getSkip();
        if (data instanceof TimeSeriesCollection) {
            TimeSeries ts = ((TimeSeriesCollection) data).getSeries(index);
            return MovingAverage.createMovingAverage(ts, key, (int) period, (int) skip);
        } else {
            return MovingAverage.createMovingAverage(data, index, key, period, skip);
        }
    } else if (curve instanceof UIRegressionLine) {
        RegressionType type = ((UIRegressionLine) curve).getType();
        int samples = ((UIRegressionLine) curve).getSamples();
        if (type == null || type == RegressionType.Linear) {
            double[] p = Regression.getOLSRegression(data, index);
            Function2D f = new LineFunction2D(p[0], p[1]);
            return createFunctionSeries(data, index, key, f, samples);
        } else if (type == RegressionType.Power) {
            double[] p = Regression.getPowerRegression(data, index);
            Function2D f = new PowerFunction2D(p[0], p[1]);
            return createFunctionSeries(data, index, key, f, samples);
        } else {
            throw new IllegalArgumentException(type.toString());
        }
    } else if (curve instanceof UISpline) {
        SplineType type = ((UISpline) curve).getType();
        int samples = ((UISpline) curve).getSamples();
        int degree = ((UISpline) curve).getDegree();
        if (type == null || type == SplineType.BSpline) {
            return BSpline.createBSpline(data, index, key, samples, degree);
        } else if (type == SplineType.CubicSpline) {
            return CubicSpline.createCubicSpline(data, index, key, samples);
        }
    }

    return null;
}

---