[GitHub] [arrow-nanoarrow] eddelbuettel commented on issue #296: Argument `ordered` in `na_dictionary` is always ignored

["eddelbuettel (via GitHub)" <gi...@apache.org>]

eddelbuettel commented on issue #296:
URL: https://github.com/apache/arrow-nanoarrow/issues/296#issuecomment-1716038325

   I guess this is a related shortcoming.  Turning a `factor` (that should be / can be `ordered`) into `ordered` leads to what seems like an incorrect schema print as the ordered flag is ignored -- flag should be 3 not 2.
   
   ```r
   > pclass <- as.ordered(earth::etitanic$pclass)
   > str(pclass)
    Ord.factor w/ 3 levels "1st"<"2nd"<"3rd": 1 1 1 1 1 1 1 1 1 1 ...
   > infer_nanoarrow_schema(pclass)
   <nanoarrow_schema dictionary(int32)<string>>
    $ format    : chr "i"
    $ name      : chr ""
    $ metadata  : list()
    $ flags     : int 2
    $ children  : list()
    $ dictionary:<nanoarrow_schema string>
     ..$ format    : chr "u"
     ..$ name      : chr ""
     ..$ metadata  : list()
     ..$ flags     : int 2
     ..$ children  : list()
     ..$ dictionary: NULL
   > 
   ```


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