Author: brentworden
Date: Thu Jun 7 06:44:09 2007
New Revision: 545179
URL: http://svn.apache.org/viewvc?view=rev&rev=545179
Log:
Removed dependency on DistributionFactory. Added settable gamma distribution
field.
Modified:
jakarta/commons/proper/math/trunk/src/java/org/apache/commons/math/distribution/ChiSquaredDistributionImpl.java
Modified:
jakarta/commons/proper/math/trunk/src/java/org/apache/commons/math/distribution/ChiSquaredDistributionImpl.java
URL:
http://svn.apache.org/viewvc/jakarta/commons/proper/math/trunk/src/java/org/apache/commons/math/distribution/ChiSquaredDistributionImpl.java?view=diff&rev=545179&r1=545178&r2=545179
==============================================================================
---
jakarta/commons/proper/math/trunk/src/java/org/apache/commons/math/distribution/ChiSquaredDistributionImpl.java
(original)
+++
jakarta/commons/proper/math/trunk/src/java/org/apache/commons/math/distribution/ChiSquaredDistributionImpl.java
Thu Jun 7 06:44:09 2007
@@ -37,12 +37,22 @@
/**
* Create a Chi-Squared distribution with the given degrees of freedom.
- * @param degreesOfFreedom degrees of freedom.
+ * @param df degrees of freedom.
*/
- public ChiSquaredDistributionImpl(double degreesOfFreedom) {
+ public ChiSquaredDistributionImpl(double df) {
+ this(df, new GammaDistributionImpl(df / 2.0, 2.0));
+ }
+
+ /**
+ * Create a Chi-Squared distribution with the given degrees of freedom.
+ * @param df degrees of freedom.
+ * @param g the underlying gamma distribution used to compute
probabilities.
+ * @since 1.2
+ */
+ public ChiSquaredDistributionImpl(double df, GammaDistribution g) {
super();
- setGamma(DistributionFactory.newInstance().createGammaDistribution(
- degreesOfFreedom / 2.0, 2.0));
+ setGamma(g);
+ setDegreesOfFreedom(df);
}
/**
@@ -161,11 +171,14 @@
}
/**
- * Modify the Gamma distribution.
- * @param gamma the new distribution.
+ * Modify the underlying gamma distribution. The caller is responsible for
+ * insuring the gamma distribution has the proper parameter settings.
+ * @param g the new distribution.
+ * @since 1.2 made public
*/
- private void setGamma(GammaDistribution gamma) {
- this.gamma = gamma;
+ public void setGamma(GammaDistribution g) {
+ this.gamma = g;
+
}
/**
---------------------------------------------------------------------
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
