[Eeglablist] Problem Importing EGI SFP file

[Tarik S Bel-Bahar]

Hello Angel, here are a few suggestions. Best wishes.

*Let eeglab use whatever channels it wants first when you import, and
then see if the same error happens when you simply plot the channel
locations via the gui in 2D, and when you press the 2-d and 3-d plot
button inside the Edit > Channel Locations within the eeglab gui. Do
you still see this weirdness ? If not, then at this point re-import
your locations and then see if the error is still there or not.
Generally there should be no problem viewing the 256 channel
locations, it's an uncomon error.

*If you're instead within the "Head model and Settings" of Dipfit in
the EEGLAB gui,  there being some bug there in showing channel
locations (within the "Head model and Settings" of Dipfit in EEGLAB)
depending on which head model you select. Do you see the same problem
with each kind of head or only one kind of head? If you're seeing a
problem there, then you may want to add a detailed note and sample
file to the Eeglab bugzilla system.

*Another thing to try would be to "transform" the channel locaitons
within the Edit>Channel locations, and then attempt replotting via the
method you are using that is giving you the error.

*Another thing to try could be to show that the error does or does not
happen when you do the same thing with tutorial daa. Or after you make
a fresh intallation of eeglab, and it's plugins.









On Mon, Mar 28, 2016 at 5:26 PM, Angel Nguyen <nguyang at ohsu.edu> wrote:
> Hi,
>
>
>
> I am working with 256 channel EGI EEG data. We exported the data from
> Netstation to the EGI Matlab format. We successfully imported it into
> EEGLab. We also read the event information from a cell array contained in
> the EGI Matlab file and created a text file of events that we successfully
> imported to EEGLab. We are having trouble with the final step that of
> importing the individual subjects channel locations.
>
>
>
> We can import the SFP file without error, but when we create it to de-plot,
> we noticed that all the electrodes are compressed into the upper right of
> the head and rotated along one or two axes. We are stuck at this point, can
> you give us any suggestions?
>
>
>
>
>
> Thank you,
>
>
>
> Angel Nguyen
>
> OHSU Behavioral Neuroscience
>
>
>
>
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