[ARROW-13886] [R] Expand documentation for decimal()

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 7.0.0
• Component/s: R
• Labels: good-first-issue pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/29502
• Assignee: Dragoș Moldovan-Grünfeld
• Reporter: Nicola Crane
• Created: 03/Sep/21 10:26
• Updated: 11/Jan/23 08:36
• Resolved: 27/Nov/21 15:42

Description

Two main things we could update here:

1. The general description of what the decimal type is and is for and/or a link to the C++ docs - in the details section, add some explanation of what an Arrow decimal() type is and why it is automatically mapped to an R double type
2. Documentation of the params precision and scale.  We could add a bit more information to explain what that actually means to the user, as it's not immediately obvious.

 

Issue Links

• relates to: ARROW-14842 [C++] Improve precision range error messages for Decimal128Type/Decimal256Type
• relates to: ARROW-14843 [R] Implement decimal128() (to replace decimal())
• relates to: ARROW-14844 [R] Implement decimal256()
• links to: GitHub Pull Request #11758