[jira] [Closed] (ARROW-14362) [R] Should case_when() work outside mutate()

["Neal Richardson (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/ARROW-14362?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Neal Richardson closed ARROW-14362.
-----------------------------------
    Resolution: Invalid

> [R] Should case_when() work outside mutate()
> --------------------------------------------
>
>                 Key: ARROW-14362
>                 URL: https://issues.apache.org/jira/browse/ARROW-14362
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: R
>            Reporter: Dragoș Moldovan-Grünfeld
>            Priority: Minor
>
> Currently {{arrow::case_when()}} has been implemented to work inside an {{arrow::mutate()}} call. As a consequence, this chunk of code errors:
> {code:r}
> arrow_vec <- Array$create(c(1:3, 5:8))
> case_when(arrow_vec < 4 ~ "less than 4", 
>           TRUE ~ "greater than 4")
> Error: LHS of case 1 (`arrow_vec < 4`) must be a logical vector, not a `Array/ArrowDatum/ArrowObject/R6` object.
> {code}
> while the equivalent dplyr code works:
> {code:r}
> library(dplyr)
> num_vec <- c(1:3, 5:8)
> case_when(
>     num_vec < 4 ~ "less than 4",
>     TRUE ~ "greater than 4")
> [1] "less than 4"    "less than 4"    "less than 4"    "greater than 4"
> [5] "greater than 4" "greater than 4" "greater than 4"
> {code}
> This is related to ARROW-13799.



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