read_fcdc_event
Kambiz Tavabi
kambiz.tavabi at UNI-MUENSTER.DE
Fri Feb 17 11:13:15 CET 2006
Hi Jan,
When it comes to MATLAB I am a low level kind of guy!
With a break @ line 64
>stim = read_ctf_meg4(datafile, hdr, 1, hdr.nTrials*hdr.nSamples,
A call to stimindx returns; Empty matrix: 0-by-1.
The data I have has been recorded on a CTF machine with the newest available
software which apparently displays only a virtual channel labeled STIM seen
in the Data Editor. The virtual STIM channel is a combination of UPPT01 &
UPPT02 parallel ports used for stimulus delivery. I can send you the dsinfo
for this file if you'd like.
Apparently stimindx is empty; and my dataset consists of a no channel
labeled STIM. But this is in accordance with current CTF format. What to
do now?
Thanks,
Kambiz
-----Original Message-----
From: FieldTrip discussion list [mailto:FIELDTRIP at NIC.SURFNET.NL] On Behalf
Of Jan Mathijs Schoffelen
Sent: Friday, February 17, 2006 10:18 AM
To: FIELDTRIP at NIC.SURFNET.NL
Subject: Re: [FIELDTRIP] wavelet analysis
Dear Kambiz,
This looks like a pretty low level error to me.
>??? Error using ==> fieldtrip-20060131\private\read_ctf_meg4
>no channels were specified for reading CTF data
>Error in ==> fieldtrip-20060131\private\read_ctf_trigger at 64
>stim = read_ctf_meg4(datafile, hdr, 1, hdr.nTrials*hdr.nSamples,
stimindx);
It seems as if the variable stimindx has not been defined. Perhaps you could
check that first, by putting a breakpoint at the specified line in
read_ctf_trigger.
Might it be the case that your dataset does not contain a channel with the
label 'STIM'?
Yours, Jan-Mathijs
More information about the fieldtrip
mailing list