[OASIS Issue Tracker] Commented: (OFFICE-3662) chart:interpolation

[ http://tools.oasis-open.org/issues/browse/OFFICE-3662?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=28597#action_28597 ] 

Patrick Durusau commented on OFFICE-3662:
-----------------------------------------

Andreas, will this proposal remain the same with the addition of the attributes: 

"chart:spline-limits, chart:spline-limits-start, chart:spline-limits-end
that would modify the cubic-spline interpolation already provided in ODF
1.2."

?

Are there modifications to the language on 20:26 required?

> chart:interpolation
> -------------------
>
>                 Key: OFFICE-3662
>                 URL: http://tools.oasis-open.org/issues/browse/OFFICE-3662
>             Project: OASIS Open Document Format for Office Applications (OpenDocument) TC
>          Issue Type: Improvement
>          Components: Chart
>    Affects Versions: ODF 1.2 CD 07
>            Reporter: Andreas Guelzow 
>            Assignee: Andreas Guelzow 
>             Fix For: ODF 1.3 CSD 01
>
>
> Currently ODF 1.2 has only 3 possible values for chart:interpolation. Since some ODF implementation have a much larger selection of interpolation types (e.g. closed splines, parabolic splines, cubic csplines, clamped csplines, various step type interpolations), we should add additional ones. I propose that initially we add some step-type interpolations. 
> Step type interpolations are useful for various applications such as discrete survival curves as used in Kaplan-Meier analysis. 

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