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https://issues.apache.org/jira/browse/SOLR-10684?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Joel Bernstein updated SOLR-10684:
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    Attachment: SOLR-10684.patch

> Add finddelay Stream Evaluator
> ------------------------------
>
>                 Key: SOLR-10684
>                 URL: https://issues.apache.org/jira/browse/SOLR-10684
>             Project: Solr
>          Issue Type: New Feature
>      Security Level: Public(Default Security Level. Issues are Public) 
>            Reporter: Joel Bernstein
>         Attachments: SOLR-10684.patch, SOLR-10684.patch
>
>
> The *finddelay* Stream Evaluator finds the delay/lag between two time series. 
> Under the covers the convolution function will perform the math to find the 
> delay.
> Syntax:
> {code}
> delay = finddelay(colA, colB)
> {code}
> The convolution implementation is provided by Apache Commons Math.



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