OverFlowError when calling : `SourceEstimate.plot(...)` about mne-python

[wmvanvliet]

Ah, the np.log10() call needs protection to prevent no.log10(0) of course. My bad :) PR incoming

[welcome]

Hello! 👋 Thanks for opening your first issue here! ❤️ We will try to get back to you soon. 🚴

[drammock]

Thanks for the report. It appears it's happening because the maximum value of your data is zero (which may indicate a mistake somewhere in your script; is data with no positive values plausible for you?)

The error is happening here:

mne-python/mne/viz/_brain/_brain.py

Lines 4153 to 4171 in 1c5b39f

	def _get_range(brain):
	"""Get the data limits.
	Since they may be very small (1E-10 and such), we apply a scaling factor
	such that the data range lies somewhere between 0.01 and 100. This makes
	for more usable sliders. When setting a value on the slider, the value is
	multiplied by the scaling factor and when getting a value, this value
	should be divided by the scaling factor.
	"""
	val = np.abs(np.concatenate(list(brain._current_act_data.values())))
	fmin, fmax = np.min(val), np.max(val)
	if 1e-02 <= fmax <= 1e02:
	fscale_power = 0
	else:
	fscale_power = int(np.log10(fmax))
	if fscale_power < 0:
	fscale_power -= 1
	fscale = 10**-fscale_power
	return fmin, fmax, fscale, fscale_power

@wmvanvliet you wrote this code in your UI event system work (#11891), any chance you have time to take a look?