- MNE version: 0.24.0
- macOS 11.6.1
I’ve posted several questions the past year or so about a GUI I’m writing, which requires I obtain quantities from an open EEG raw plot. These are used for calculations when the user presses a button or selects an option from a pull-down window. For example,
fig.mne.info['bads']
retrieves the list of currently labelled bad channels.
From looking closely at _mpl_figure.py in mne/viz, I see that
fig.mne.t_start - fig.mne.first_time
retrieves the starting time of the currently viewed time interval.
I’ve also added a couple lines to _mpl_figure.py so that I can recover the location of a marked segment.
I’m trying to do the same to retrieve the current scalings. Specifically, in my GUI, the user will view a raw plot, select a subset of channels and adjust the scalings via the + and - keys. They then press a “plot selected” button, which will yield a new plot with only the selected channels and using the updated scalings.
The selected channels feature works fine–it’s a matter of the scalings. I thought these values are stored in _mpl_figure.py as the dictionary fig.mne.scalings
However, it appears their values are not being updated. When the user presses the “plot selected”
button, the dictionary does not change from
fig.mne.scalings={'mag': 1e-12, 'grad': 4e-11, 'eeg': 5e-05, ...}
Most of these values are the default ones described under raw.plot
So, the question I’m ultimately asking is how I can recover the current scalings dictionary with the raw plot figure still open.
I hope this makes sense.