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From "David Georg Reichelt (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MATH-1279) Avoid unexpected errors in EmpiricalDistribution
Date Wed, 30 Sep 2015 09:59:04 GMT
David Georg Reichelt created MATH-1279:
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             Summary: Avoid unexpected errors in EmpiricalDistribution
                 Key: MATH-1279
                 URL: https://issues.apache.org/jira/browse/MATH-1279
             Project: Commons Math
          Issue Type: Improvement
    Affects Versions: 3.5
         Environment: Ubuntu 14.04
            Reporter: David Georg Reichelt
            Priority: Trivial


Loading an empirical distributions results in an ArrayIndexOutOfBoundsException when giving
0 als bin size, for example in:

double values[] = new double[] { 1, 2 };
EmpiricalDistribution distribution = new EmpiricalDistribution(0);
distribution.load(values);

To keep the error more understandable to the user, it would be nice if an RuntimeException
or something like this would be thrown when initializing the EmpiricalDistribution with 0
bins. Especially when following the rule of thumb that there should be values size / 10 bins,
it is hard to find out that the error is caused by a wrong bin size.



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