[FieldTrip] a question

[Stephen Politzer-Ahles]

Hello Fateme,

I believe ft_topoplotER needs its input to be a Fieldtrip data structure
that is the output of ft_timelockanalysis (i.e., the structure includes an
'avg' field that is a channels x timepoints matrix, and in the fall to
ft_topoplotER you specify cfg.param='avg'). It sounds like your pinput is
not a structure like this, but is a 1-dimensional vector.

You can plot a vector like this pretty easily using the topoplot() function
of the EEGLAB toolbox. (There may also be ways to do it in Fieldtrip but
I'm not aware of them; I've only ever used ft_topoplotER with a timelock
structure. Someone else on the list might know some tricks, though).

Best,
Steve


Stephen Politzer-Ahles
New York University, Abu Dhabi
Neuroscience of Language Lab
http://www.nyu.edu/projects/politzer-ahles/



>
> ------------------------------
>
> Message: 4
> Date: Fri, 11 Apr 2014 14:24:54 +0100 (BST)
> From: ?F.Hasanzade? ? <f.hasanzadeh22 at yahoo.com>
> To: "fieldtrip at science.ru.nl" <fieldtrip at science.ru.nl>
> Subject: [FieldTrip] a question
> Message-ID:
>         <1397222694.1541.YahooMailNeo at web171304.mail.ir2.yahoo.com>
> Content-Type: text/plain; charset="utf-8"
>
> Dear community,
> My name is Fateme Hasanzade and I am working on EEG signals.
> Currently I am analysing data of a project, where we recorded using EEG.I
> have a data such that every channel has 1 value that is result of some
> calculation(I mean I have 14 channel thus a data vector of length14).I want
> to plot map of head how? every channel has a color corresponding its?
> value...
>
>
> I tried using? ft_topoplotER to assess my data and I made the true layout
> but when I want to use ft_topoplotER receive the following error message:?
>
> Subscript indices must either be real positive integers or logicals.
>
> Error in topoplot_common (line 79)
> data = varargin{indx};
>
> Error in ft_topoplotER (line 169)
> cfg = topoplot_common(cfg, varargin{:});
>
> Error in top (line 19)
> figure; ft_topoplotER(cfg,data); colorbar;?
>
> my quetion is how should I give this data? to function to? have true
> topographic plot of my data?
>
>
> Thank you
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