[Eeglablist] presenting epochs one above the other

[Mikołaj Magnuski]

Check EEGlab options (file -> memory and other options). You can choose
between single and double precision there.
(before ICA the data are always cast to double precision as far as I
remember)
19 maj 2014 00:15 "shahar" <shahars10 at gmail.com> napisał(a):

> Hello Mikolaj,
> Thanks for this code. I haven't check your whole code, but it looks very
> good.
> I have one question though: we have some data of double precision, but
> when it's translated to the EEGLAB, the variable EEG.data contains data
> of single precision. Does anyone have an idea why this precision has
> changed ?
> Thank you,
>
> Shahar
>
>
> On Sun, May 18, 2014 at 3:06 AM, Mikołaj Magnuski <
> imponderabilion at gmail.com> wrote:
>
>> The simplest (but not necessarily most efficient) way of doing this is:
>>
>> 1. Load the data (using pop_loadset() for example or through the GUI)
>> 2. Run this script (it should work correctly assuming you have
>>     more epochs than channels):
>>
>> %%%%%%
>>
>> % get size of data and allocate new data matrix
>> Siz = size(EEG.data);
>> NewData = zeros(fliplr(Siz));
>>
>> % restrucutre the data
>> for i = 1:Siz(1)
>>     NewData(:, :, i) = squeeze(EEG.data(i, :, :))';
>> end
>>
>> % update relevant fields
>> EEG.data = NewData;
>> EEG.nbchan = Siz(3);
>> EEG.trials = Siz(1);
>>
>> % add fake channel info:
>> addchn = Siz(3) - Siz(1);
>>
>> for a = 1:addchn
>>     num = num2str(rand(1));
>>     fakename = ['ch_', num(3:5)];
>>     EEG.chanlocs(Siz(1)+a) = EEG.chanlocs(Siz(1) - mod(a, Siz(1)));
>>     EEG.urchanlocs(Siz(1)+a) = EEG.urchanlocs(Siz(1) - mod(a, Siz(1)));
>>     EEG.chanlocs(Siz(1)+a).labels = fakename;
>>     EEG.urchanlocs(Siz(1)+a).labels = fakename;
>> end
>>
>> % trim the epoch structure
>> EEG.epoch(end -(addchn - 1):end) = [];
>>
>> % redraw eeglab GUI
>> eeglab redraw
>> clear NewData a num fakename Siz i addchn
>>
>> %%%%%%
>>
>> 3. Now using standard channel (scroll) plotting
>>     will show you epochs as electrodes and vice
>>     versa. If it does not work correctly - let me know.
>>
>
>
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