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https://issues.apache.org/jira/browse/ARROW-14267?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17426841#comment-17426841
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Rok Mihevc commented on ARROW-14267:
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I believe geometry is a pandas extension array
([https://jorisvandenbossche.github.io/blog/2019/08/13/geopandas-extension-array-refactor/)]
and currently cannot be automatically converted to an arrow extension array.
But I could be wrong. [~jorisvandenbossche] will definitely know more.
> [Python] Cannot convert pd.DataFrame with geometry cells to pa.Table
> --------------------------------------------------------------------
>
> Key: ARROW-14267
> URL: https://issues.apache.org/jira/browse/ARROW-14267
> Project: Apache Arrow
> Issue Type: Bug
> Components: Python
> Affects Versions: 5.0.0
> Reporter: Henrikh Kantuni
> Priority: Minor
> Labels: pyarrow
>
> Example:
> {code:java}
> import geopandas as gpd
> import pandas as pd
> import pyarrow as pa
> path = gpd.datasets.get_path("naturalearth_lowres")
> data = gpd.read_file(path)
> df = pd.DataFrame(data)
> table = pa.Table.from_pandas(df)
> print(table)
> {code}
> Throws the following error:
> {code:java}
> Traceback (most recent call last):
> File "/Users/Henrikh/Desktop/tmp.py", line 8, in <module>
> table = pa.Table.from_pandas(df)
> File "pyarrow/table.pxi", line 1553, in pyarrow.lib.Table.from_pandas
> File "/usr/local/lib/python3.9/site-packages/pyarrow/pandas_compat.py", line
> 594, in dataframe_to_arrays
> arrays = [convert_column(c, f)
> File "/usr/local/lib/python3.9/site-packages/pyarrow/pandas_compat.py", line
> 594, in <listcomp>
> arrays = [convert_column(c, f)
> File "/usr/local/lib/python3.9/site-packages/pyarrow/pandas_compat.py", line
> 581, in convert_column
> raise e
> File "/usr/local/lib/python3.9/site-packages/pyarrow/pandas_compat.py", line
> 575, in convert_column
> result = pa.array(col, type=type_, from_pandas=True, safe=safe)
> File "pyarrow/array.pxi", line 302, in pyarrow.lib.array
> File "pyarrow/array.pxi", line 79, in pyarrow.lib._ndarray_to_array
> File "pyarrow/array.pxi", line 67, in pyarrow.lib._ndarray_to_type
> File "pyarrow/error.pxi", line 120, in pyarrow.lib.check_status
> pyarrow.lib.ArrowTypeError: ('Did not pass numpy.dtype object', 'Conversion
> failed for column geometry with type geometry'){code}
>
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