DataFrame.quantile

[gatorsmile]

https://pandas.pydata.org/pandas-docs/stable/reference/api/pandas.DataFrame.quantile.html

df = ks.DataFrame(
  {"a" : [4, 5, 6],
   "b" : [7, 8, 9],
   "c" : [10, 11, 12]},
  index = [1, 2, 3]
)
df.quantile([0.25,0.75])

---------------------------------------------------------------------------
PandasNotImplementedError                 Traceback (most recent call last)
<ipython-input-36-ade0575f6b3c> in <module>
----> 1 df.quantile([0.25,0.75])

/srv/conda/envs/notebook/lib/python3.7/site-packages/databricks/koalas/missing/__init__.py in unsupported_function(*args, **kwargs)
     22     def unsupported_function(*args, **kwargs):
     23         raise PandasNotImplementedError(class_name=class_name, method_name=method_name,
---> 24                                         reason=reason)
     25 
     26     def deprecated_function(*args, **kwargs):

PandasNotImplementedError: The method `pd.DataFrame.quantile()` is not implemented yet.

[HyukjinKwon]

FYI, there's quantile implementation in Series to refer. cc @itholic, @harupy, @charlesdong1991

[itholic]

@HyukjinKwon Thanks for the inform. so, you mean we have to implement not only DataFrame.quantile but also Series.quantile, right?
ah i got it, we can refer to Series's implementation that already implemented. i've misread.

[itholic]

i just ended up my another work. I'll take this work from now on.