ZeroDivisionError - Unable to read an older Micromed file--test file needed

[theairbend3r]

Describe the bug Get a ZeroDivisionError when trying to read a micromed .trc file via MicromedIO(file_path).read(). The same file can be read with Wonambi (another python package) as wonambi.Dataset(file_path).

To Reproduce The error traceback is as follows.

Traceback (most recent call last):
  File ".venv/lib/python3.11/site-packages/marimo/_runtime/executor.py", line 141, in execute_cell
    exec(cell.body, glbls)
    ....

    trc = MicromedIO(file_path).read()
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File ".venv/lib/python3.11/site-packages/neo/io/micromedio.py", line 13, in __init__
    BaseFromRaw.__init__(self, filename)
  File ".venv/lib/python3.11/site-packages/neo/io/basefromrawio.py", line 77, in __init__
    self.parse_header()
  File ".venv/lib/python3.11/site-packages/neo/rawio/baserawio.py", line 211, in parse_header
    self._parse_header()
  File ".venv/lib/python3.11/site-packages/neo/rawio/micromedrawio.py", line 176, in _parse_header
    self._t_starts.append(seg_start / self._sampling_rate)
                          ~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~
ZeroDivisionError: float division by zero

Expected behaviour The file should have been read. Based on the error, the ZeroDivisionError maybe caused by self._sampling_rate being 0 when it is read in the MicromedRawIO file as self._sampling_rate = float(np.unique(signal_channels["sampling_rate"])[0]).

But, I am able to access the sampling frequency in Wonambi as follows (it comes out to be 512 btw).

trc = wonambi.Dataset(file_path)
trc.header["s_freq"]

Environment:

• OS: Linux
• Python 3.11
• Neo 0.15.0.dev0 (the latest main branch)
• NumPy 2.2.5