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

["Dragoș Moldovan-Grünfeld (Jira)" <ji...@apache.org>]

Dragoș Moldovan-Grünfeld created ARROW-14362:
------------------------------------------------

             Summary: [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


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|https://issues.apache.org/jira/browse/ARROW-13799].



--
This message was sent by Atlassian Jira
(v8.3.4#803005)