@Test
public void testTransformMoreSegmentsThanValues() throws Exception {
thrown.expect(ArrayLengthIsTooSmallException.class);
thrown.expectMessage("3 is smaller than the minimum (8)");
AdaptivePiecewiseConstantApproximation apca = new AdaptivePiecewiseConstantApproximation(4);
double[] v = {1, 2, 3};
apca.transform(v);
}
@Test
public void testTransform() throws Exception {
AdaptivePiecewiseConstantApproximation apca = new AdaptivePiecewiseConstantApproximation(3);
double[] v = {1, 1, 4, 5, 1, 0, 1, 2, 1};
MeanLastPair[] result = apca.transform(v);
Assert.assertEquals(1, result[0].getMean(), TimeSeriesPrecision.EPSILON);
Assert.assertEquals(2, result[0].getLast());
Assert.assertEquals(4.5, result[1].getMean(), TimeSeriesPrecision.EPSILON);
Assert.assertEquals(4, result[1].getLast());
Assert.assertEquals(1, result[2].getMean(), TimeSeriesPrecision.EPSILON);
Assert.assertEquals(8, result[2].getLast());
}
