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https://issues.apache.org/jira/browse/MADLIB-1033?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Frank McQuillan updated MADLIB-1033:
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Description:
As a follow on to the pivot function
https://issues.apache.org/jira/browse/MADLIB-908
Implement unpivot function. Use ideas from Pandas [1] or Chorus [2]
References
[1] Pandas unpivot
http://pandas.pydata.org/pandas-docs/stable/reshaping.html
[2] Unpivot in Chorus 6
https://alpine.atlassian.net/wiki/display/V6/Release+Notes+6.x
"A Transformation operator that allows the user to select one or more columns
to be unpivoted. The columns selected will be removed from the input and
instead be 'flattened' into two new columns. (DEV-13907)"
was:
As a follow on to the pivot function
https://issues.apache.org/jira/browse/MADLIB-908
implement unpivot. Use ideas from Pandas.
> Unpivot
> -------
>
> Key: MADLIB-1033
> URL: https://issues.apache.org/jira/browse/MADLIB-1033
> Project: Apache MADlib
> Issue Type: New Feature
> Components: Module: Utilities
> Reporter: Frank McQuillan
>
> As a follow on to the pivot function
> https://issues.apache.org/jira/browse/MADLIB-908
> Implement unpivot function. Use ideas from Pandas [1] or Chorus [2]
> References
> [1] Pandas unpivot
> http://pandas.pydata.org/pandas-docs/stable/reshaping.html
> [2] Unpivot in Chorus 6
> https://alpine.atlassian.net/wiki/display/V6/Release+Notes+6.x
> "A Transformation operator that allows the user to select one or more columns
> to be unpivoted. The columns selected will be removed from the input and
> instead be 'flattened' into two new columns. (DEV-13907)"
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