sophie
June 13, 2025, 12:34pm
1
Hello!
richard
June 14, 2025, 9:42am
2
Hello @Sophie , this was recently added and we should probably cut a new release:
main ← harrisonritz:custom_metadata
opened 08:06PM - 05 May 25 UTC
From https://github.com/mne-tools/mne-bids-pipeline/issues/1086
Allow for use… rs to pass custom metadata, which is added to epoch info.
1. Users convert a pandas `DataFrame` into a `Dict` (eg in the config file)
2. this `Dict` is converted back to a `DataFrame` at the point of epoch creation.
e.g. in the config:
```python
import pandas as pd
import numpy as np
metadata_path = "my_dataframe.csv"
metadata_df = pd.read_csv(metadata_path)
epochs_custom_metadata = metadata_df.replace({np.nan: None}).to_dict()
del metadata_path, metadata_df
```
While there are some upcoming methods for putting metadata into the `events.tsv`, this approach allows for analysis-specific metadata (e.g., if some metadata columns apply to specific epoch types)
### todo
- [x] write tests
### Before merging …
- [x] Changelog has been updated (`docs/source/dev.md.inc`)
I believe a release is currently blocked by:
opened 04:12PM - 11 Jun 25 UTC
I'm seeing this:
> E UserWarning: json-tricks: numpy scalar serialization i… s experimental and may work differently in future versions
which looks like https://json-tricks.readthedocs.io/en/latest/index.html?highlight=numpy%20scalar#numpy-scalars
_Originally posted by @drammock in https://github.com/mne-tools/mne-bids-pipeline/issues/1088#issuecomment-2963406924_
But if you’re willing to use the dev version, you should be able to supply custom metadata already.
cc @drammock @larsoner
Ciao,
2 Likes
sophie
June 16, 2025, 7:53am
3
Great news @richard ! We will try with the dev version and keep checking for the new release.
system
June 23, 2025, 7:54am
4
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