MEGMODEL

[Christian Hesse]

Hi Eve,

FieldTrip handles (pretty much) all function calls to the meg-pd
toolbox for you (in particular which are the appropriate input
arguments to use) so you don't have to deal with these issues yourself.

See if you can extract the header information and some data from
your .fif file using

filename = "fullpath/name.fif"
hdr = read_fcdc_header(filename);
% hdr should be a structure
dat = read_fcdc_data(filename);
% dat should be a nchan x nsamp matrix

see what you get.

Regards,
Christian



On 17 Feb 2007, at 21:03, alotof eve wrote:

> Hi, experts,
>
>    Maybe I misunderstood the command. My MEG data is from NeuroMag
> 306 channels.  Does that mean I should use "Neuromag-306" as
> argument? Thanks for any suggestion.
>
> Best,
> Eve
>
>
> alotof eve <alotof_xd at yahoo.com> wrote:
> Hi Christian,
>
>     Yes it works. Thank you so much.
>     But now I met a new problem. I got only a whole .fif data. When
> I tried the command "MEGMODEL", it said any argument can be left
> out. However, the error showed up again:
> >> MEGMODEL
> ??? Could not load the coil files
>
> Error in ==> F:\MATLAB6p5\bin\win32\megmodel.dll
>
> I couldn't find any .fif file like Neuromag-122 or coilfile.fif.
> How do you settle it?
> Thanks.
>
> Best,
> Eve
>
> Christian Hesse <c.hesse at FCDONDERS.RU.NL> wrote:
> Hi Eve,
>
> you should be able to use the meg-pd toolbox (also from FieldTrip)
> in Matlab under Windows. I got the toolbox to work in Matlab7 under
> WindowsXP as follows:
>
>  - extract the meg-pd-1.2-10.mswin.zip file to somewhere
> -  then copy (or move) the meg_pd_1.2 directory wherever you want
> -  in the README file in the meg-pd-1.2-10.mswin directory it
> specifies that you need to copy the DLL file "meg-pd-1.2-10.mswin
> \lib\i686-pc-cygwin\libmagnet_pd_1.2.dll" into the bin directory of
> Matlab on your system, in my case this was the directory "MATLAB71
> \bin\win32"
> -  start up Matlab, add the fieldtrip and meg_pd_1.2 directories to
> your path and try to read your .fif file
>
> Let me know if this works on your Windows system
>
> Regards,
> Christian
>
>
> On 15 Feb 2007, at 17:32, alotof eve wrote:
>
>> Hi, experts,
>>
>>      I am a new user of fieldtrip. I try to use meg-pd package to
>> import NeuroMag data but it seems there is something wrong with
>> the environment.
>>     The error  showed as:
>>         Unable to load mex file: F:\MATLAB6p5\toolbox
>> \fieldtrip-20070213\meg_pd_1.2\loadfif.dll.
>> The specified module could not be found.
>>
>>       The true is the .dll is in the same path as .m and the path
>> has been add the Matlab.
>>       I use Latlab 6.5 under WindowXP. I don't know if it affects.
>> I saw the "lib" in the same meg-pd package included a .dll for pc-
>> cygwin. I wonder if I have to use Matlab under Linux/Unix
>> environment. Or if any other limits.
>>
>>      Please help me. Thanks.
>>
>> Best,
>> Eve
>>
>> TV dinner still cooling?
>> Check out "Tonight's Picks" on Yahoo! TV.
>
> ----------------------------------------------------------------------
> Christian Hesse, PhD, MIEEE
>
> F.C. Donders Centre for Cognitive Neuroimaging
> P.O. Box 9101
> NL-6500 HB Nijmegen
> The Netherlands
>
> Tel.: +31 (0)24 36 68293
> Fax: +31 (0)24 36 10989
>
> Email: c.hesse at fcdonders.ru.nl
> Web: www.fcdonders.ru.nl
> ----------------------------------------------------------------------
>
>
>
>
>
> TV dinner still cooling?
> Check out "Tonight's Picks" on Yahoo! TV.
>
>
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----------------------------------------------------------------------
Christian Hesse, PhD, MIEEE

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

Tel.: +31 (0)24 36 68293
Fax: +31 (0)24 36 10989

Email: c.hesse at fcdonders.ru.nl
Web: www.fcdonders.ru.nl
----------------------------------------------------------------------




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