Trouble reading KML file

[remi-braun]

Hello,

Some KML files are not correctly read by pyogrio (when fine with fiona even if the handling is more complicated, and the ogr2ogr conversion works also fine).
For other KML files, pyogrio works.

Here is faulty data: ICEYE_X2_QUICKLOOK_SC_124020_20210827T162211.zip

import geopandas as gpd
gpd.read_file('ICEYE_X2_QUICKLOOK_SC_124020_20210827T162211.kml', engine="pyogrio")

Output:

Traceback (most recent call last):
  File "/opt/.pycharm_helpers/pydevd_asyncio/pydevd_asyncio_utils.py", line 11


7, in _exec_async_code
    result = func()
             ^^^^^^
  File "<input>", line 1, in <module>
  File "/root/.local/lib/python3.11/site-packages/geopandas/io/file.py", line 317, in _read_file
    return _read_file_pyogrio(
           ^^^^^^^^^^^^^^^^^^^
  File "/root/.local/lib/python3.11/site-packages/geopandas/io/file.py", line 577, in _read_file_pyogrio
    return pyogrio.read_dataframe(path_or_bytes, bbox=bbox, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/root/.local/lib/python3.11/site-packages/pyogrio/geopandas.py", line 275, in read_dataframe
    result = read_func(
             ^^^^^^^^^^
  File "/root/.local/lib/python3.11/site-packages/pyogrio/raw.py", line 198, in read
    return ogr_read(
           ^^^^^^^^^
  File "pyogrio/_io.pyx", line 1297, in pyogrio._io.ogr_read
  File "pyogrio/_io.pyx", line 1972, in pyogrio._io.get_default_layer
IndexError: index 0 is out of bounds for axis 0 with size 0

Versions : geopandas: 1.1.0, pyogrio: 0.11.0

[brendan-ward]

It looks like the KML does not read properly with the default KML driver; I am able to reproduce the issue with pyogrio wheels (where we are not able to bundle in LIBKML for reasons). For reasons I haven't yet investigated, it doesn't detect any layers within the KML data source. I wonder if this is an upstream bug, but don't have time at the moment to verify that.

The LIBKML driver, which perhaps is available in your install of Fiona, appears to detect a single layer in the KML file, which is probably why it works.

[theroggy]

I can conform your findings @brendan-ward . If you install geopandas and its dependencies using conda-forge, it works fine as the LIBKML driver is being installed that way, and if it is available, it becomes the default.

Hence, would it be possible for you @remi-braun tot install your environment using conda?

[remi-braun]

Halas I am not controlling how geopandas is installed :(
My workaround is to try to use pyogrio and if it fails try to use fiona engine instead (lightweight wrapper)

Maybe linked to #444 if I understand your answer correctly

[martinfleis]

Yes, and this attempt to include libkml #451

[theroggy]

Maybe linked to #444 if I understand your answer correctly

Yes, it seems to be the same underlying issue: the LIBKML GDAL driver not being available in the pyogrio wheels.

Yes, and this attempt to include libkml #451

In practice, more information about why LIBKML didn't get included in the wheels (yet) is in #466 and #453.