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Posted to jira@arrow.apache.org by "Ian Cook (Jira)" <ji...@apache.org> on 2021/09/22 14:59:00 UTC
[jira] [Updated] (ARROW-13772) [R] Binding for median() and
quantile() aggregation functions
[ https://issues.apache.org/jira/browse/ARROW-13772?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ian Cook updated ARROW-13772:
-----------------------------
Summary: [R] Binding for median() and quantile() aggregation functions (was: [R] Binding for median aggregation)
> [R] Binding for median() and quantile() aggregation functions
> -------------------------------------------------------------
>
> Key: ARROW-13772
> URL: https://issues.apache.org/jira/browse/ARROW-13772
> Project: Apache Arrow
> Issue Type: Improvement
> Components: R
> Reporter: Nicola Crane
> Assignee: Nicola Crane
> Priority: Critical
> Labels: kernel, pull-request-available
> Fix For: 6.0.0
>
> Time Spent: 3h 20m
> Remaining Estimate: 0h
>
> Another aggregate function we’ll need to look at is median().
> That should in theory map to the existing quantile kernel and the hopefully-coming-soon hash_quantile kernel with q = 0.5, but that will not work right now for several reasons (see https://issues.apache.org/jira/browse/ARROW-13309).
> However we also have a pair of
> approximate quantile kernels: tdigest and hash_tdigest that we could map median() to.
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