public void SpectrumData_LogarithmicTransform()
{
SpectrumData data = SpectrumData.Create(
new float[][]
{
new float[] { 0.1f, 0.2f, 0.3f, 0.4f, 0.5f, 0.6f, 0.7f, 0.8f, 0.9f, 1.0f }
},
ScaleType.Linear,
ScaleType.Linear,
0f, 1000f);
var log = data.LogarithmicTransform(3, 1, 1000);
Assert.AreEqual(1, log.Count);
Assert.AreEqual(3u, log.FrequencyCount);
Assert.AreEqual(1, log.MinFrequency);
Assert.AreEqual(1000, log.MaxFrequency);
var expected = new float[] { 0.009495f, 0.1395f, 5.3f };
for (int index = 0; index < log.Count; index++)
{
Assert.AreEqual(expected[0], log[0][0], 1e-9);
Assert.AreEqual(expected[1], log[0][1], 1e-7);
Assert.AreEqual(expected[2], log[0][2], 1e-5);
}
}
