problems using fieldtrip

[Hoi Fei Kwok]

Thanks, Robert,

The 'Subject01.ds' was in the search path. The error occurred whether I was
in the same directory as the 'Subject01.ds' or not. When I typed the command
while in the same directory as the 'Subject01.ds', I got this:

CTF_READ_RES4 [v  1.12]
...done (  0.79 sec)

??? Error using ==> read_fcdc_header
could not read CTF res4 header file

Error in ==> preprocessing at 219
hdr = read_fcdc_header(cfg.headerfile);


Regards,
Hoi Fei


-----Original Message-----
From: FieldTrip discussion list [mailto:FIELDTRIP at NIC.SURFNET.NL] On Behalf
Of Robert Oostenveld
Sent: 09 August 2005 14:39
To: FIELDTRIP at NIC.SURFNET.NL
Subject: Re: [FIELDTRIP] problems using fieldtrip

Dear Hoi Fei

On 9-aug-2005, at 15:05, Hoi Fei Kwok wrote:
> This is the first time that I am using FieldTrip. Just like to ask  
> what
> other software are needed besides MATLAB in order to run the  
> tutorials. I

Some parts of the tutorials use CTF specific applications. That is  
commercial software only available to CTF MEG users. However, you can  
skip those parts of the tutorial. Furthermore, I think that there is  
a tutorial that refers to MRIcro, you can get that here: http:// 
www.psychology.nottingham.ac.uk/staff/cr1/mricro.html

> have tried to run the tutorials after downloading and unzipping the
> Subject01.zip but I ran into problems.
> Firstly, in the Event Related Averaging tutorial, the
> EventRelatedAveraging.m was mentioned but I could not find the file.

you can copy and paste all matlab instructions from the pdf into the  
matlab command line window. I will also make the demo scripts  
available for download on the website, but I won't be able to do that  
immediately.

> Secondly, after I created a cfg structure with 'Subject01.ds' as the
> dataset and all the other field properties as instructed in the  
> tutorial, I
> got the following error message when using the preprocessing.m:
>
> CTF_READ_RES4 [v  1.12]
> ??? Error using ==> read_fcdc_header
> could not read CTF res4 header file
>
> Error in ==> preprocessing at 219
> hdr = read_fcdc_header(cfg.headerfile);

Are you at the right location with Matlab? I.e., if you type "pwd",  
does that correspond with the directory where Subject01.ds is located?

best regards,
Robert