/** Checks the results of a power regression on sample dataset 2. */
@Test
public void testPowerRegression2a() {
double[][] data = createSampleData2();
double[] result = Regression.getPowerRegression(data);
assertEquals(106.1241681, result[0], 0.0000001);
assertEquals(-0.8466615, result[1], 0.0000001);
}
/** Checks the results of a power regression on sample dataset 1. */
@Test
public void testPowerRegression1a() {
double[][] data = createSampleData1();
double[] result = Regression.getPowerRegression(data);
assertEquals(0.91045813, result[0], 0.0000001);
assertEquals(0.88918346, result[1], 0.0000001);
}
/**
* Checks the results of a power regression on sample dataset 1 AFTER converting it to an
* XYSeries.
*/
@Test
public void testPowerRegression1b() {
double[][] data = createSampleData1();
XYSeries series = new XYSeries("Test");
for (int i = 0; i < 11; i++) {
series.add(data[i][0], data[i][1]);
}
XYDataset ds = new XYSeriesCollection(series);
double[] result = Regression.getPowerRegression(ds, 0);
assertEquals(0.91045813, result[0], 0.0000001);
assertEquals(0.88918346, result[1], 0.0000001);
}
/**
* Checks the results of a power regression on sample dataset 2 AFTER converting it to an
* XYSeries.
*/
@Test
public void testPowerRegression2b() {
double[][] data = createSampleData2();
XYSeries series = new XYSeries("Test");
for (int i = 0; i < 10; i++) {
series.add(data[i][0], data[i][1]);
}
XYDataset ds = new XYSeriesCollection(series);
double[] result = Regression.getPowerRegression(ds, 0);
assertEquals(106.1241681, result[0], 0.0000001);
assertEquals(-0.8466615, result[1], 0.0000001);
}
