#2538 added the ability to plot GFPs. Currently, the GFP is only temporarily calculated for plotting, and the user has no easy way to access the data.
In our EEG workflow, we typically calculate GFPs for every single participant and condition, and average conditions across participants for plotting; or we compute statistics based on the GFP differences. It is therefore highly important for us to have easy access to the GFPs. We resorted to doing the calculations manually based on Evoked.data, but this is cumbersome as one has to "leave" the MNE sphere and implement the operations by hand via NumPy and/or Pandas -- which is not easy for beginners and error-prone, as Pandas by default uses the unbiased estimator for standard deviation and NumPy doesn't.
I can try to implement a GFP function, but I would need assistance in doing so. I don't really know where to start or where to put that code: should it be a method of the Evoked class? Potentially exposed as a property, so it could be accessed via Evoked.gfp? Or should it be an entirely new class? Would it have to have its own plotting method? etc. pp. Any help and suggestions would be greatly appreciated.
#2538 added the ability to plot GFPs. Currently, the GFP is only temporarily calculated for plotting, and the user has no easy way to access the data.
In our EEG workflow, we typically calculate GFPs for every single participant and condition, and average conditions across participants for plotting; or we compute statistics based on the GFP differences. It is therefore highly important for us to have easy access to the GFPs. We resorted to doing the calculations manually based on
Evoked.data, but this is cumbersome as one has to "leave" the MNE sphere and implement the operations by hand via NumPy and/or Pandas -- which is not easy for beginners and error-prone, as Pandas by default uses the unbiased estimator for standard deviation and NumPy doesn't.I can try to implement a GFP function, but I would need assistance in doing so. I don't really know where to start or where to put that code: should it be a method of the
Evokedclass? Potentially exposed as a property, so it could be accessed viaEvoked.gfp? Or should it be an entirely new class? Would it have to have its own plotting method? etc. pp. Any help and suggestions would be greatly appreciated.