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Posted to jira@arrow.apache.org by "Nic Crane (Jira)" <ji...@apache.org> on 2021/08/26 18:28:00 UTC

[jira] [Created] (ARROW-13772) [R] Binding for median aggregation

Nic Crane created ARROW-13772:
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             Summary: [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: Nic Crane
            Assignee: Nic Crane


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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