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Posted to jira@arrow.apache.org by "Niranda Perera (Jira)" <ji...@apache.org> on 2021/06/01 19:07:00 UTC

[jira] [Commented] (ARROW-9431) [C++/Python] Kernel for SetItem(IntegerArray, values)

    [ https://issues.apache.org/jira/browse/ARROW-9431?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17355298#comment-17355298 ] 

Niranda Perera commented on ARROW-9431:
---------------------------------------

[~jorisvandenbossche] [~uwe]  my initial idea is the following cases for the function.
{code:python}
def replace_by_index(source, indices, values)
{code}
array(k) --> array of size k, M <= N
||source||indices||values||output||
|array(N)|array(M)|array(M)|array(N)|
|array(N)|array(M)| scalar|array(N)|
|array(N)|scalar|scalar|array(N)|

That covers all the cases IMO. WDYT?

> [C++/Python] Kernel for SetItem(IntegerArray, values)
> -----------------------------------------------------
>
>                 Key: ARROW-9431
>                 URL: https://issues.apache.org/jira/browse/ARROW-9431
>             Project: Apache Arrow
>          Issue Type: New Feature
>          Components: C++, Python
>    Affects Versions: 2.0.0
>            Reporter: Uwe Korn
>            Assignee: Niranda Perera
>            Priority: Major
>
> We should have a kernel that allows overriding the values of an array using an integer array as the indexer and a scalar or array of equal length as the values.



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