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Posted to jira@arrow.apache.org by "Ian Cook (Jira)" <ji...@apache.org> on 2021/09/21 04:40:00 UTC
[jira] [Comment Edited] (ARROW-13772) [R] Binding for median
aggregation
[ https://issues.apache.org/jira/browse/ARROW-13772?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17417887#comment-17417887 ]
Ian Cook edited comment on ARROW-13772 at 9/21/21, 4:39 AM:
------------------------------------------------------------
Now blocked by ARROW-14050 or alternatively ARROW-14052
was (Author: icook):
Now blocked by ARROW-14050
> [R] Binding for median aggregation
> ----------------------------------
>
> 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: 1h 50m
> 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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