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Posted to issues@arrow.apache.org by "eitsupi (via GitHub)" <gi...@apache.org> on 2023/05/09 12:35:12 UTC

[GitHub] [arrow] eitsupi opened a new issue, #35510: [R] Support interval type

eitsupi opened a new issue, #35510:
URL: https://github.com/apache/arrow/issues/35510

   ### Describe the enhancement requested
   
   It seems to lack the ability to convert Arrow Interval type to R.
   
   For example, the following is a Python example of how an Interval type can be written to an Arrow file.
   
   ```python
   import pyarrow as pa
   import pyarrow.feather as feather
   
   tbl=pa.table([pa.array([(1, 15, -30)], type=pa.month_day_nano_interval())],
   names="x")
   feather.write_feather(tbl, "test.arrow")
   ```
   
   This file can be read in R, but cannot be converted to R type.
   
   ```r
   > arrow::read_feather("test.arrow")
   Error: cannot handle Array of type <month_day_nano_interval>
   
   > arrow::read_feather("test.arrow", as_data_frame = FALSE)$x
   ChunkedArray
   <month_day_nano_interval>
   [
     [
       1M15d-30ns
     ]
   ]
   ```
   
   But this type looks like lubridate's Period type, so perhaps it can be converted to this?
   
   ```r
   > lubridate::period(c(1, 15, -30e-9), c("month", "day", "second"))
   [1] "1m 15d 0H 0M -3e-08S"
   ```
   
   ### Component(s)
   
   R


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[GitHub] [arrow] eitsupi commented on issue #35510: [R] Support interval type

Posted by "eitsupi (via GitHub)" <gi...@apache.org>.
eitsupi commented on issue #35510:
URL: https://github.com/apache/arrow/issues/35510#issuecomment-1540047047

   Sorry, it seems duplicate of #29433


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[GitHub] [arrow] eitsupi closed issue #35510: [R] Support interval type

Posted by "eitsupi (via GitHub)" <gi...@apache.org>.
eitsupi closed issue #35510: [R] Support interval type
URL: https://github.com/apache/arrow/issues/35510


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