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https://issues.apache.org/jira/browse/MATH-677?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13167390#comment-13167390
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Sébastien Brisard commented on MATH-677:
----------------------------------------
{{FastSineTransformer}} has been modified according to the above discussion in
revision {{1213157}}.
* {{transform2()}} and {{inverseTransform2()}} have gone,
* constructors have been made private,
* two factory methods are provided {{create()}} and {{createOrthogonal()}}.
> About package "transform"
> -------------------------
>
> Key: MATH-677
> URL: https://issues.apache.org/jira/browse/MATH-677
> Project: Commons Math
> Issue Type: Improvement
> Reporter: Gilles
> Assignee: Sébastien Brisard
> Priority: Minor
> Labels: api-change
> Fix For: 3.0
>
>
> Classes in package "o.a.c.m.transform" might require some changes in order to
> conform to goals set for the next major release.
> Some observations:
> # Exceptions
> ## Should remove use of deprecated "MathRuntimeException"
> ## Should throw more specific "Math...Exception" instances instead of
> standard IAE
> # Interface "RealTransformer" (and implementations) contain non-conformant
> method names (e.g. "inversetransform" instead of "inverseTransform").
> {color:red}Fixed in {{r1208293}}.{color}
> # "FastFourierTransformer":
> ## Methods "mdfft" and "verifyDataSet" take an argument of type "Object" (to
> allow an argument with an unspecified number of dimensions)
> ## The "RootsOfUnity" helper class could be moved to the "complex" package
> ## For clarity, multidimensional transform should be moved to a class of its
> own (and I also wonder whether the "MultiDimensionalComplexMatrix" name is
> not misleading)
> # "FastFourierTransformer", "FastSineTranformer" and "FastCosineTranformer"
> define public methods "tranform2" and "inversetransform2" but they are not
> part of an interface
> # Code uses variables that start with an uppercase. {color:red}Fixed,
> together with various formatting issues.{color}
> # "FastHadamardTransformer" contains illegible developer documentation (see
> Javadoc for protected method "fht"). {color:red}Tried to improve things in
> {{r1208986}}, but things are still a bit obscure. Besides, the link provided
> is broken. Will look into that.{color}
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