Author: erans
Date: Wed Jun 13 09:30:56 2012
New Revision: 1349707
URL: http://svn.apache.org/viewvc?rev=1349707&view=rev
Log:
MATH-798
Unit test.
Modified:
commons/proper/math/trunk/src/test/java/org/apache/commons/math3/optimization/fitting/GaussianFitterTest.java
Modified:
commons/proper/math/trunk/src/test/java/org/apache/commons/math3/optimization/fitting/GaussianFitterTest.java
URL:
http://svn.apache.org/viewvc/commons/proper/math/trunk/src/test/java/org/apache/commons/math3/optimization/fitting/GaussianFitterTest.java?rev=1349707&r1=1349706&r2=1349707&view=diff
==============================================================================
---
commons/proper/math/trunk/src/test/java/org/apache/commons/math3/optimization/fitting/GaussianFitterTest.java
(original)
+++
commons/proper/math/trunk/src/test/java/org/apache/commons/math3/optimization/fitting/GaussianFitterTest.java
Wed Jun 13 09:30:56 2012
@@ -315,6 +315,35 @@ public class GaussianFitterTest {
Assert.assertEquals(53.1572792, p[1], 1e-7);
Assert.assertEquals(5.75214622, p[2], 1e-8);
}
+
+ @Test
+ public void testMath798() {
+ final GaussianFitter fitter = new GaussianFitter(new
LevenbergMarquardtOptimizer());
+
+ // When the data points are not commented out below, the fit stalls.
+ // This is expected however, since the whole dataset hardly looks like
+ // a Gaussian.
+ // When commented out, the fit proceeds fine.
+
+ fitter.addObservedPoint(0.23, 395.0);
+ //fitter.addObservedPoint(0.68, 0.0);
+ fitter.addObservedPoint(1.14, 376.0);
+ //fitter.addObservedPoint(1.59, 0.0);
+ fitter.addObservedPoint(2.05, 163.0);
+ //fitter.addObservedPoint(2.50, 0.0);
+ fitter.addObservedPoint(2.95, 49.0);
+ //fitter.addObservedPoint(3.41, 0.0);
+ fitter.addObservedPoint(3.86, 16.0);
+ //fitter.addObservedPoint(4.32, 0.0);
+ fitter.addObservedPoint(4.77, 1.0);
+
+ final double[] p = fitter.fit();
+
+ // Values are copied from a previous run of this test.
+ Assert.assertEquals(420.8397296167364, p[0], 1e-12);
+ Assert.assertEquals(0.603770729862231, p[1], 1e-15);
+ Assert.assertEquals(1.0786447936766612, p[2], 1e-14);
+ }
/**
* Adds the specified points to specified <code>GaussianFitter</code>
