[FieldTrip] reading in ascii files

[Eelke Spaak]

Hi Martine,

You mentioned that you are already able to get it into Matlab, so my
guess is that the best way to read it into FieldTrip is to get it into
a generic Matlab array first, and then hack a bit to make it
FT-compatible.

If the data is not segmented yet, you can convert it into one big
'trial', and subsequently use ft_redefinetrial to get it segmented. A
typical raw data structure would be:

data = [];
data.label = {'chan1'...'chanN'};
data.time = {0:1/fsample:tEnd};
data.trial = {dat}; % where dat is channel X timepoint

For more details, see the help and code of ft_datatype_raw.

Hope that helps!
Best,
Eelke

On 11 November 2014 02:45, Martine van Schouwenburg
<martine.vanschouwenburg at ucsf.edu> wrote:
> Hi all,
>
>
>
> I have been using a new (wireless and dry!) EEG cap called Enobio
> (http://www.neuroelectrics.com/ ). It saves the data in a non-traditional
> format called .easy files, but they are basically just ascii files that can
> be read with dlmread into matlab. Is anyone aware of a way I can read these
> files into Fieldtrip? I tried changing the extension to .txt, because on the
> Fieldtrip website it mentions this as one of the supported data formats (for
> NIRS though..), but I get the following error.
>
>
>
> Error using ft_read_header (line 1833)
>
> unsupported header format (ascii_txt)
>
>
>
> I guess it makes sense cause there is no header in the file. J It is just a
> table with number of electrodes x number of data points. If anyone has
> succeeded in the past to read in ascii files into Fieldtrip, or has any idea
> on how to achieve this, I would very much appreciate your advice!
>
>
>
> Thanks!
>
>
>
> Best,
>
> Martine van Schouwenburg
>
>