marsupialtail commented on issue #35508:
URL: https://github.com/apache/arrow/issues/35508#issuecomment-1556083301

   I'm sorry @kat-grayson I was away for the past two days.
   
   This is understandable -- since the array_ptr is not pointing to a real 
arrow array. I recommend referencing the implementation here: 
https://github.com/marsupialtail/quokka/blob/master/pyquokka/datastream.py#L957 
or maybe just here: 
https://github.com/marsupialtail/ldb/blob/master/src/test1.py
   
   The input values are pretty much a direct mapover to the tdigest code that 
currently lives in arrow c++. I would refer you to that code: just search 
tdigest in arrow github.


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