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<div class="moz-cite-prefix">Dear Enrico,<br>
<br>
the error you are describing is clearly from a rather old version
of FieldTrip, because sens.pnt is deprecated. Could you make sure
that you are using the newest FieldTrip version? Since you load
from c:\...\fieldtrip-20130307\... I assume that you downloaded
the newest version already. It might be that either you have not
updated your startup script in adding the correct FieldTrip
version or that you are adding both, an old and a new FieldTrip
version to your Matlab path. You could check in Matlab what
function is being used by typing:<br>
<small><i><br>
which ft_prepare_vol_sens</i></small><br>
<br>
If you want to add only the newest FieldTrip and remove the old
one, you can call<i> </i><small><i>restoredefaultpath</i></small>
in Matlab. The add <font color="#000000"><font><font><font><font><font><font><font><font><font><font
color="#000000"><font><font><font><font><font><font><font><font><font>c:\MATLAB\R2009b\work\fieldtrip-20130307\
to your path and call <small><i>ft_def</i><i>aults</i></small>.</font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font>
That should solve the issue. Note that your Matlab is <u>definitely</u>
calling an old FT version, because the line tyour error comes from
does not exist anymore (i.e. it has been rewritten, because
sens.pnt is deprecated)<br>
<br>
Hope it works out for you! Best,<br>
Jörn.<br>
<br>
<br>
On 3/8/2013 1:31 PM, Enrico Schulz wrote:<br>
</div>
<blockquote
cite="mid:CAMAKw=ZUjv15mMpikOvUOA0fXho9uasFPNKyx7ODDUN67Pm29Q@mail.gmail.com"
type="cite"><font color="#000000"><font>Dear Lilla an<font>d Jörn,<br>
<br>
<font>thank you very m<font>uch f<font>or your reply on my <font>problem.
</font></font></font></font></font></font></font><br>
<font>I alre<font>ady checked the example sites but g<font>ot
still error messages<font>.<br>
<br>
For creating the (l<font>eadfield</font>) grid variable
used the temp<font>l</font>ate files provide<font>d by <font>Fieldtrip.<br>
<font>vol stru<font>cture: </font></font><br>
</font></font></font></font></font></font><font
color="#000000"><font><font><font><font><font><font><font><font><font><font
color="#000000"><font><font><font><font><font><font><font><font><font>load('c:\MATLAB\R2009b\work\fieldtrip-20130307\template\headmodel\standard_bem.mat');<br>
<br>
<font>I created a sensor<font>
structure ba<font>sed
on <font>the
"standard_1020.elc"
</font>file.<br>
<br>
<font>sens = <br>
<br>
chanpos: [65x3
double]<br>
elecpos: [65x3
double]<br>
label: {65x1
cell}<br>
type:
'ext1020'<br>
unit: 'mm'<br>
pnt: [65x3
double]</font><br>
</font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font><br>
<font>I started creating the leadfiled:</font><br>
cfg = [];<br>
<font>c</font>fg.elec = sens;<br>
cfg.vol = vol;<br>
cfg.reducerank = 3;<br>
cfg.grid.resolution = 1;<br>
[grid65] = ft_prepare_leadfield(cfg);<br>
<br>
<br>
Finally I got the following error message. <br>
<font>??? Reference to non-existent field 'pnt'.<br>
<br>
Error in ==> ft_prepare_vol_sens at 301<br>
sens.pnt = sens.pnt(selsens,:);<br>
<br>
Error in ==> prepare_headmodel at 90<br>
[vol, sens] = ft_prepare_vol_sens(vol, sens, 'channel',
cfg.channel, 'order',<br>
cfg.order);<br>
<br>
Error in ==> ft_prepare_leadfield at 148<br>
[vol, sens, cfg] = prepare_headmodel(cfg, data);</font><br>
<br>
<br>
<font>That error message is funny because my sens variable has a
sens.pnt su<font>bno<font>de.</font></font></font><br>
<br>
I (hopefully) solved the problem by editing the <font> "</font><font
color="#000000"><font><font><font><font><font><font><font><font
color="#000000"><font><font><font><font><font><font><font><font><font>
ft_prepare_vol_sens"</font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font></font>
function and loading the s<font>ens variable just before the
error line in the 295</font>. It is running now but is <font>t<font>hat
way correct?</font></font><br>
<br>
Any help is highly appreciated.<br>
Thank you very much.<br>
Best,<br>
Enrico<br>
<br>
<br>
<div class="gmail_quote">On 5 March 2013 12:08, <span dir="ltr"><<a
moz-do-not-send="true" href="mailto:Lilla.Magyari@mpi.nl"
target="_blank">Lilla.Magyari@mpi.nl</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0
.8ex;border-left:1px #ccc solid;padding-left:1ex">Dear Enrico,<br>
<br>
I think more information is needed about the error messages
and about how<br>
you try to compute leadfield in order to help.<br>
<br>
If you have not encountered the FT tutorial sites, example
scripts and<br>
FAQs yet, maybe you can check out those as well because they
provide<br>
information on source-reconstruction, leadfields... etc..<br>
(For example, a tutorial for EEG headmodels:<br>
<a moz-do-not-send="true"
href="http://fieldtrip.fcdonders.nl/tutorial/headmodel_eeg"
target="_blank">http://fieldtrip.fcdonders.nl/tutorial/headmodel_eeg</a>
and an example script<br>
for leadfield computation:<br>
<a moz-do-not-send="true"
href="http://fieldtrip.fcdonders.nl/example/compute_leadfield"
target="_blank">http://fieldtrip.fcdonders.nl/example/compute_leadfield</a>).<br>
<br>
Best,<br>
Lilla<br>
<div class="HOEnZb">
<div class="h5"><br>
<br>
> Dear Fieldtrip experts,<br>
><br>
> I would like to create a leadfield based on the
standard brain provided by<br>
> the fieldtrip package and standard electrode
positions.<br>
> Unfortunately, whatever I'm trying it ends up in a
number of error<br>
> messages.<br>
><br>
> Is anybody out there who could provide some support?<br>
><br>
> Thank you very much in advance,<br>
> Best,<br>
> Enrico<br>
><br>
><br>
> --<br>
> Dr. Enrico Schulz<br>
> Postdoc<br>
> Klinikum rechts der Isar der Technischen Universität
München<br>
> Neurologische Klinik und Poliklinik<br>
> Neuro-Kopf-Zentrum<br>
> Ismaningerstr. 22<br>
> 81675 München<br>
><br>
> Tel.: 089-4140-7664<br>
</div>
</div>
<div class="HOEnZb">
<div class="h5">>
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</div>
</blockquote>
</div>
<br>
<br clear="all">
<br>
-- <br>
<div>Dr. Enrico Schulz<br>
</div>
<div>Postdoc</div>
Klinikum rechts der Isar der Technischen Universität München<br>
Neurologische Klinik und Poliklinik<br>
Neuro-Kopf-Zentrum<br>
Ismaningerstr. 22<br>
81675 München<br>
<br>
Tel.: 089-4140-7664
<br>
<br>
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<pre wrap="">_______________________________________________
fieldtrip mailing list
<a class="moz-txt-link-abbreviated" href="mailto:fieldtrip@donders.ru.nl">fieldtrip@donders.ru.nl</a>
<a class="moz-txt-link-freetext" href="http://mailman.science.ru.nl/mailman/listinfo/fieldtrip">http://mailman.science.ru.nl/mailman/listinfo/fieldtrip</a></pre>
</blockquote>
<br>
<br>
<pre class="moz-signature" cols="72">--
Jörn M. Horschig
PhD Student
Donders Institute for Brain, Cognition and Behaviour
Centre for Cognitive Neuroimaging
Radboud University Nijmegen
Neuronal Oscillations Group
FieldTrip Development Team
P.O. Box 9101
NL-6500 HB Nijmegen
The Netherlands
Contact:
E-Mail: <a class="moz-txt-link-abbreviated" href="mailto:jm.horschig@donders.ru.nl">jm.horschig@donders.ru.nl</a>
Tel: +31-(0)24-36-68493
Web: <a class="moz-txt-link-freetext" href="http://www.ru.nl/donders">http://www.ru.nl/donders</a>
Visiting address:
Trigon, room 2.30
Kapittelweg 29
NL-6525 EN Nijmegen
The Netherlands</pre>
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