custom topography for topoplotER

[Ole Jensen]

Hi Thomas,
Thanks for the info. I now understand from your figures that your want
to plot the topography of intracranial EEG data and thats why you do not
want the head drawn. If you try cfg.showlabels = 'yes' you will probably
find that the sensors are correctly placed. In order to suppress the
drawing of the head I suggest you modify private/topoplot.m (which is
used by topoplotER.m). The last part of this function draws the head. If
you make it general with an option (e.g. cfg.headplot = 'yes'/'no') in
topoplot.m we can include it in the toolbox with the documentation in
topoplotER.m and topoplotTFR.m (its probably easier if we update
topoplotER/topoplotTFR here).
I hope this helps you along!
Bests,
Ole






Thomas Thesen wrote:

>Dear Ole & others,
>
>Thanks a lot for your time in helping to figure out this problem. I greatly
>appreciate it.
>
>I have put an example data file (avg_ft_TT_S106Cond1.mat), the layout file
>(iEEG_64.lay) and an image of the output figure of TOPOPLOTER
>(topoplotER_iEEG_64.jpg) and MULTIPLOTER (multiplotER_iEEG_64.jpg  on the web:
>
>http://www.physiol.ox.ac.uk/~tnt/fieldtrip/
>
>I ran the following:
>
>
>
>>>load avg_ft_TT_S106Cond1.mat
>>>
>>>
>
>
>
>>>avg_ft_TT_S106Cond1
>>>
>>>
>
>avg_ft_TT_S106Cond1 =
>
>           cfg: [1x1 struct]
>           avg: [64x2500 double]
>           var: [64x2500 double]
>       fsample: 1000
>    numsamples: [70x1 double]
>          time: [1x2500 double]
>        dofvec: [1x2500 double]
>         label: {64x1 cell}
>         trial: [70x64x2500 double]
>        dimord: 'trial_chan_time'
>
>
>
>>>cfg=[];
>>>cfg.xlim = [0.5 1];
>>>figure;
>>>cfg.layout='iEEG_64.lay';
>>>topoplotER(cfg, avg_ft_TT_S106Cond1);
>>>
>>>
>reading layout from file iEEG_64.lay
>selected 64 channels for plotting
>
>
>
>As you can see there is no error message but the topopgraphy is mapped onto
>a circular headshape with ears and nose (see topoplotER_iEEG_64.jpg).
>
>The actual data is recorded from an intra-cranial EEG electrode grid implant
>on the superior temporal sulcus and has the following channel arrangement:
>
>64 63 62 61 60 59 58 57
>56 55 54 53 52 51 50 49
>48 47 46 45 44 43 42 41
>40 39 38 37 36 35 34 33
>32 31 30 29 28 27 26 25
>24 23 22 21 20 19 18 17
>16 15 14 13 12 11 10 9
>8 7 6 5 4 3 2 1
>
>(The numbers correspond to the channels/sensors in avg_ft_TT_S106Cond1.avg)
>
>Ideally, I would like to plot the topography on a 8x8 square (equal spacing)
>instead of a round scalp. The layout file seems to be correct. If
>MULTIPLOTER is used with the cfg configs:
>
>
>
>>>cfg.layout='iEEG_64.lay';
>>>figure;
>>>cfg.xlim = [0.5 1];
>>>cfg.axes = 'no';
>>>cfg.showlabels ='yes';
>>>multiplotER(cfg, avg_ft_TT_S106Cond1);
>>>
>>>
>reading layout from file iEEG_64.lay
>
>it produces a figure as in multiplotER_iEEG_64.jpg, and has the correct
>sensor arrnagements.
>
>cheers,
>
>Thomas
>
>
>
>On Sun, 26 Jun 2005 13:40:03 +0200, Ole Jensen <ole.jensen at FCDONDERS.RU.NL>
>wrote:
>
>
>
>>Hi Thomas,
>>Please understand that our resources for support are limited; you can
>>save us a lot of time by providing
>>1) error messages
>>2) the cfg settings you used
>>3) your *.lay file
>>I will then do my best to resolve the problem.
>>Bests,
>>
>>Ole
>>
>>
>>Thomas Thesen wrote:
>>
>>
>>
>>>Hi Robert, Eric & Others,
>>>
>>>I am trying to use TOPOPLOTER to make topographic plots of averaged
>>>waveforms with interpolation between electrode positions.
>>>
>>>However, it seems that TOPOPLOTER uses a 2-D circular view of the head (with
>>>nose & ears) as a a default plotting background structure. My data was
>>>recorded from a 8x8 electrode grid (square and equal spacing). I made an
>>>appropriate layout file (.lay), which works well with MULTIPLOTER, but not
>>>with TOPOPLOTER.
>>>
>>>Any suggestions on how to make this work would be greatly appreciated.
>>>
>>>Cheers,
>>>
>>>Thomas
>>>
>>>
>>>
>>>
>>>
>>--
>>Ole Jensen
>>Principal Investigator
>>F.C. Donders Centre for Cognitive Neuroimaging
>>P.O. Box 9101
>>NL-6500 HB Nijmegen
>>The Netherlands
>>
>>Office  : +31 24 36 10884
>>MEG lab : +31 24 36 10988
>>
>>Fax     : +31 24 36 10989
>>
>>e-mail : ole.jensen at fcdonders.ru.nl
>>URL    : http://oase.uci.ru.nl/~olejen
>>
>>
>
>
>


--
Ole Jensen
Principal Investigator
F.C. Donders Centre for Cognitive Neuroimaging
P.O. Box 9101
NL-6500 HB Nijmegen
The Netherlands

Office  : +31 24 36 10884
MEG lab : +31 24 36 10988

Fax     : +31 24 36 10989

e-mail : ole.jensen at fcdonders.ru.nl
URL    : http://oase.uci.ru.nl/~olejen