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https://issues.apache.org/jira/browse/CHUKWA-69?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Eric Yang updated CHUKWA-69:
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Resolution: Fixed
Status: Resolved (was: Patch Available)
I just committed this, thanks Cheng.
> Calculate trapezoid area for a given series of data
> ---------------------------------------------------
>
> Key: CHUKWA-69
> URL: https://issues.apache.org/jira/browse/CHUKWA-69
> Project: Hadoop Chukwa
> Issue Type: Task
> Components: User Interface
> Reporter: Cheng
> Assignee: Eric Yang
> Priority: Minor
> Attachments: CHUKWA-69-1.patch, chukwa-69.patch
>
>
> Calculate trapezoid area for a given series of data.
> suppose we have:
> x0, x1, x2, x3
> y0, y1, y2, y3
> the area would be
> (x1-x0) * (y1+y0)/2 + (x2-x1) * (y2+y1)/2 + (x3-x2) * (y3+y2)/2
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