This repository was archived by the owner on Nov 19, 2020. It is now read-only.
This repository was archived by the owner on Nov 19, 2020. It is now read-only.
TwoSampleWilcoxonSignedRankTest crashing when sample vectors are exactly the same values #849
Description
Hello,
it seems, that TwoSampleWilcoxonSignedRankTest has a bug when both passed in sample vectors are exactly the same. The signs and diffs are thus 0 all the time, which leads to an exception later on.
Can you please check on that?
Here the stack-trace:
Index was outside the bounds of the array.
at Accord.Statistics.Tools.Rank(Double[] samples, Boolean& hasTies, Boolean alreadySorted, Boolean adjustForTies)
at Accord.Statistics.Testing.WilcoxonTest.Compute(Int32[] signs, Double[] diffs, DistributionTail tail, Nullable`1 exact, Boolean adjustForTies)
at Accord.Statistics.Testing.TwoSampleWilcoxonSignedRankTest..ctor(Double[] sample1, Double[] sample2, TwoSampleHypothesis alternate, Nullable`1 exact, Boolean adjustForTies)Regards
Harald