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Added (deep) clone() and merge() to the RunningAverage utility class 

git-svn-id: file:///humgen/gsa-scr1/gsa-engineering/svn_contents/trunk@5350 348d0f76-0448-11de-a6fe-93d51630548a
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asivache 2011-03-02 00:35:23 +00:00
parent 43567b7fe3
commit 570186fa42
1 changed files with 16 additions and 0 deletions
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16
java/src/org/broadinstitute/sting/utils/MathUtils.java
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@ -814,6 +814,22 @@ public class MathUtils {
public double stddev() { return Math.sqrt(s/(obs_count - 1)); }
public double var() { return s/(obs_count - 1); }
public long observationCount() { return obs_count; }
public RunningAverage clone() {
RunningAverage ra = new RunningAverage();
ra.mean = this.mean;
ra.s = this.s;
ra.obs_count = this.obs_count;
return ra;
}
public void merge(RunningAverage other) {
if ( this.obs_count > 0 || other.obs_count > 0 ) { // if we have any observations at all
this.mean = ( this.mean * this.obs_count + other.mean * other.obs_count ) / ( this.obs_count + other.obs_count );
this.s += other.s;
}
this.obs_count += other.obs_count;
}
}
//