[Eeglablist] save .edf file

[Makoto Miyakoshi]

Dear Ramon,

Here is a file I/O issue.

Makoto


On Wed, Jul 2, 2014 at 4:05 PM, Parker, Christopher <
christopher.parker.10 at ucl.ac.uk> wrote:

>  Hi,
>
>
>  Does anyone know how to save an eeglab structure as a .edf file in
> MATLAB? pop_export() doesn't seem to be working for me.
>
>
>  I read my .edf file in to MATLAB using:
>
>
>  a = pop_biosig(a_filename, 'importevent','off','importannot','off');
>
>
>  I now want to make some change to the 'data' field (append data from
> another eeg structure) and then save the .edf file with a different
> filename.
>
>
>  I tried "pop_export(a,'~/test.edf')" which did save a.edf file in the
> appropriate place. But it then failed to read back in to MATLAB properly
> with pop_biosig(). The following error was displayed:
>
>
>  Reading data in unknown format...
> Reference to non-existent field 'POS'.
>
> Error in sread (line 53)
>         StartPos = HDR.FILE.POS/HDR.SampleRate;
>
> Error in pop_biosig>readfile (line 224)
>         DAT=sread(dat, Inf);% this isn't transposed in original!!!!!!!!
>
> Error in pop_biosig (line 142)
> [dat DAT interval] = readfile(filename, g.channels, g.blockrange,
> g.memorymapped);
>
>
>  I also tried it with an empty structure created by typing "eeglab" in to
> the command line. Again, the file saved but could not be read back in to
> MATLAB. This gave the error:
>
>
>  Reference to non-existent field 'POS'.
>
> Error in sread (line 53)
>         StartPos = HDR.FILE.POS/HDR.SampleRate;
>
> Error in pop_biosig>readfile (line 224)
>         DAT=sread(dat, Inf);% this isn't transposed in original!!!!!!!!
>
> Error in pop_biosig (line 142)
> [dat DAT interval] = readfile(filename, g.channels, g.blockrange,
> g.memorymapped);
>
>
>  The saved files also do not open in EDF Browser. Your help with this
> would be very much appreciated.
>
>
>  Thanks,
>
> Chris
>
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-- 
Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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