Issue using the Sentinel-1_SLC_IW.ipynb notebook

[lbal1]

Hi,

I tried to follow the Sentinel-1_SLC_IW.ipynb Jupyter notebook using the same dataset; however, I am running into several error messages.
The cells
xr.open_dataset(product_path, engine="sentinel-1")
and
xr.open_dataset(product_path, engine="sentinel-1", group=swath_group)
work correctly, but the following cells (with group=swath_polarisation_group, group=measurement_group, group=f"{swath_polarisation_group}/orbit", etc.) return error messages.
Depending on the cell, I get errors such as:
“zero-size array to reduction operation fmin which has no identity”,
“list index out of range”, or
“index 0 is out of bounds for axis 0 with size 0”.

Do you know where these errors could be coming from?
We cannot see the expected outputs of the Jupyter notebook on GitHub (however, this could be useful for comparison!)

Here are the versions I am using, in case this might be causing the issue:
python : 3.14.2
xarray : 2025.12.0
xarray-sentinel : 0.9.5
rioxarray : 0.20.0
rasterio : 1.4.4

Thank you in advance for your help!

[matthewhevans]

I receive the same error when running both Sentinel-1_GRD_IW.ipynb and my own similar code. Opening group=swath_group works correctly, but I receive the same error when opening both swath_polarization_group and swath_measurement_group:

ValueError: zero-size array to reduction operation fmin which has no identity

My configuration is as follows, all running in a virtual enviroment in MacOS 26.3.1:
python: 3.12.6
xarray: 2025.10.1
xarray-sentinel: 0.9.5
rioxarray: 0.20.0
rasterio: 1.4.3
dask: 2026.1.2

Any ideas? Thanks in advance for any help or suggestions