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https://issues.apache.org/jira/browse/MATH-384?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mikkel Meyer Andersen updated MATH-384:
---------------------------------------
Attachment: MATH384-3_0
MATH384-2_2
Proposed patches with comments taken into account. The difference for 2.2 and
3.0 is that in 3.0 the DoubleArray interface has been extended to include
addElements(double[])
> DescriptiveStatistics based on double[]
> ---------------------------------------
>
> Key: MATH-384
> URL: https://issues.apache.org/jira/browse/MATH-384
> Project: Commons Math
> Issue Type: New Feature
> Reporter: Mikkel Meyer Andersen
> Assignee: Mikkel Meyer Andersen
> Priority: Minor
> Fix For: 2.2
>
> Attachments: MATH384-2_2, MATH384-3_0, patch-MATH-384-2,
> ResizableArrayInstantiatedByArray
>
> Original Estimate: 2h
> Remaining Estimate: 2h
>
> Right now the DescriptiveStatistics is for ResizableDoubleArray, but if the
> user has the double[] data she wishes to get DescriptiveStatistics for there
> is no way of doing this (besides the inefficient way of creating a
> ResizableDoubleArray from the double[]).
> It would be possible to use StatUtils, but it does not contain near as much
> functionality as DescriptiveStatistics.
> Idea: Create a DescriptiveStatistics for double[] also. I'm not sure which
> way of implementing it would be the best, but one way would be to make
> DescriptiveStatistics abstract with all but the apply-method implemented as
> now. The apply-method should be made as abstract which then has to
> implemented in the extensions together with a field containing the values.
> (addValue, windowSize etc. has to go in the ResizableDoubleArray-extension.)
> The double[]-extension should then have a constructor taking double[] as a
> parameter.
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