[ARROW-6365] [R] Should be able to coerce numeric to integer with schema

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 0.15.0
• Component/s: R
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/22739
• Assignee: Romain Francois
• Reporter: Neal Richardson
• Created: 26/Aug/19 18:54
• Updated: 11/Jan/23 07:46
• Resolved: 09/Sep/19 20:04

Description

R is flexible when it comes to integer vs. floating point, generally obscuring the details inside a "numeric" class, but it knows how to make it seem like my integer-looking data stored in a double is actually integer. This means that an R user can think they have integers even when the underlying storage is not.

So I would have expected this to work, and indeed to be one reason I'd want to specify a schema when creating a table:

> table(a = 1, schema = schema(a = int32()))
Error in Table__from_dots(dots, schema) : 
  Invalid: Cannot convert R vector of type REALSXP to integer Arrow array

Issue Links

• links to: GitHub Pull Request #5326