[Eeglablist] Topoplot - data interpolation

[Tarik S Bel-Bahar]

Hello Mariana,

here's some pointers that should be able to help you get to your goal.

IN case you have never plotted a 3D head plot in eeglab, please do the
following first:
1. load up one of the eeglab tutorial files and plot a 3D Head Plot using
the GUI.
2. When you have run the 3D Head plot and you see a figure, then type eegh
to see the function that is being used. (pop_headplot)


For your specific question, you will need to feed your matrix and other
appropriate information to the 3D headplot function.

3. If you google the following "EEGLAB functions 3D head
plot<http://www.google.com/search?client=safari&rls=en&q=EEGLAB+functions+3D+head+plot&ie=UTF-8&oe=UTF-8>",
then read the first 2 links
4. you can also simply search for the list of EEGLAB functions, and find
the headplot function.
5. Please note to have an accurate head plot, you need to make sure that
your electrodes are correctly aligned on the 3d head.

see also the following from the following page:
http://sccn.ucsd.edu/wiki/EEGLAB_Menu_Functions
*
*
*ERP maps* As 2-D scalp maps --
pop_topoplot()<http://sccn.ucsd.edu/eeglab/allfunctions/pop_topoplot.m>
As
3-D head plots --
pop_headplot()<http://sccn.ucsd.edu/eeglab/allfunctions/pop_headplot.m>
*Component maps* As 2-D scalp maps --
pop_topoplot()<http://sccn.ucsd.edu/eeglab/allfunctions/pop_topoplot.m>As
3-D head plots --
pop_headplot() <http://sccn.ucsd.edu/eeglab/allfunctions/pop_headplot.m>





Tarik Bel-Bahar, Postdoctoral Fellow
Perception, Performance & Psychophysiology Lab
tarik.777 at duke.edu/ 919 328 9573
Div. of Brain Stimulation and Neurophysiology
Dep. of Psychiatry and Behavioral Sciences
Duke University Medical Center, Duke Clinics
Red Zone, 5th Floor, Rm. 54236
200 Trent Drive, Durham, NC 27710


On Thu, Apr 18, 2013 at 2:06 AM, Mariana Branco
<marianapbranco1 at gmail.com>wrote:

> Dear Makoto,
>
> I have already my data interpolated into a 100x100 matrix and my issue is:
> how can I plot is on a Head Plot, similar or equal to the one  Topoplot()
> retrieves?
> I believe topoplot only receives a list of channels and locations and
> interpolates the data. However, I have already interpolated the data, so I
> just need to plot it.
>
> Regards,
> Mariana Branco
>
> On 18 Apr 2013, at 02:56, Makoto Miyakoshi <mmiyakoshi at ucsd.edu> wrote:
>
> Dear Mariana,
>
> Open tools - interpolate electrodes to see if that's what you want. If
> not, please ask your question again with more detail.
>
> Makoto
>
>
> 2013/4/9 Mariana Branco <marianapbranco1 at gmail.com>
>
>> Dear Sir/Madam,
>>
>> I just started working with EEGLab toolbox and I am looking for a
>> plotting function like Topoplot, but that does not interpolate the
>> channels, but receives instead as input a matrix with the interpolated
>> channels. Is there any function or option that allows this? Or is it
>> possible to alter the Topoplot function for this purpose?
>>
>> Thank you for the help,
>> Mariana Branco
>> _______________________________________________
>> Eeglablist page: http://sccn.ucsd.edu/eeglab/eeglabmail.html
>> To unsubscribe, send an empty email to
>> eeglablist-unsubscribe at sccn.ucsd.edu
>> For digest mode, send an email with the subject "set digest mime" to
>> eeglablist-request at sccn.ucsd.edu
>>
>
>
>
> --
> Makoto Miyakoshi
> Swartz Center for Computational Neuroscience
> Institute for Neural Computation, University of California San Diego
>
>
>
> _______________________________________________
> Eeglablist page: http://sccn.ucsd.edu/eeglab/eeglabmail.html
> To unsubscribe, send an empty email to
> eeglablist-unsubscribe at sccn.ucsd.edu
> For digest mode, send an email with the subject "set digest mime" to
> eeglablist-request at sccn.ucsd.edu
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://sccn.ucsd.edu/pipermail/eeglablist/attachments/20130418/5196558a/attachment.html>