[FieldTrip] ft_singleplotTFR seems broken

[Eelke Spaak]

Dear Casper,

See attached the plots I get when running your script (on
Windows/Linux Matlab 2011b/2012a). They seem quite OK to me, so I
suspect the issue is in your Matlab installation and/or system (e.g.
video drivers).

One thing that could possibly help (though I would not understand why
exactly) is to change the renderer, by trying out all three options
for cfg.renderer = 'painters'/'zbuffer'/'opengl'. Or maybe you could
try running another Matlab version?

Sorry this is not more helpful, good luck figuring it out!

Best,
Eelke

On 22 November 2013 13:36, Casper van Heck <caspervanheck at gmail.com> wrote:
> Dear Eelke,
>
> I was busy with some other stuff, and just now revisited the analysis. Even
> with a newer version of Fieldtrip, this is still happening, and I still do
> not know why...
> Have you had time to take a look at it?
>
> Sincerely,
>
> Casper
>
>
> On Thu, Sep 26, 2013 at 12:43 PM, Casper van Heck <caspervanheck at gmail.com>
> wrote:
>>
>> Dear Eelke,
>>
>> I've put up an exerpt of my code, with the data from a single subject
>> (no.10, 9MB) in a separate folder here.
>> It also includes a screenshot of what I see with when I run the code with
>> this exact dataset, and a small program 'filehandler', which I've been to
>> lazy to replace.
>>
>> Note that this specific subject only has about 60 seconds of data (and I'm
>> still waiting for the student to tell me why).
>>
>> I'm hoping you'll get the same result as the screenshot, and you'll be
>> able to tell me why...
>>
>> Best regards,
>>
>> Casper
>>
>>
>> On Wed, Sep 18, 2013 at 1:25 PM, Eelke Spaak <eelke.spaak at donders.ru.nl>
>> wrote:
>>>
>>> Dear Casper,
>>>
>>> Could you maybe post a snippet online somewhere (e.g. dropbox) of data
>>> corresponding to this plot (i.e. the output of ft_freqanalysis that
>>> you input to ft_singleplotTFR, assuming that it's averaged over trials
>>> and therefore small)? Then we can see whether this is reproducable on
>>> our systems.
>>>
>>> Best,
>>> Eelke
>>>
>>> On 16 September 2013 17:12, Casper van Heck <caspervanheck at gmail.com>
>>> wrote:
>>> > Dear Fieldtrippers,
>>> >
>>> > I've been doing some exploratory plotting of a dataset where several
>>> > subjects were exposed to a continuous stimulus (CPM) over the course of
>>> > three minutes. One of the things that was asked was a time-frequency
>>> > plot,
>>> > over those three minutes. While I'm not quite sure a TFR can be used on
>>> > that
>>> > scale without problems, I went ahead with it just to see what Fieldtrip
>>> > would do. What I got, was this:
>>> > http://tinypic.com/r/zx2tqs/5|
>>> > And I have no idea what went wrong (note that this specific subject
>>> > only got
>>> > a 60s stimulus). Quality of the picture and the validity of the
>>> > analysis
>>> > aside, I have a severe problem with the axes, which seem to be all over
>>> > the
>>> > place.
>>> >
>>> > I simply read the data using ft_preprocessing (no filters or anything,
>>> > since
>>> > the student in charge already used a 10Hz high-pass and a 150Hz
>>> > low-pass
>>> > filter).
>>> > The only field in 'cfg' is 'headerfile'.
>>> >
>>> > Next, I call ft_freqanalysis with:
>>> >     cfg.output = 'pow';
>>> >     cfg.method = 'wavelet'; % default; Morlet wavelet
>>> >     cfg.taper = 'hanning';
>>> >     cfg.tapsmofrq = 4;
>>> >     cfg.channel = 'Cz';
>>> >     cfg.foi = [20:0.5:30];
>>> >     cfg.t_ftimwin = ones(length(cfg.foi),1).*0.25;
>>> >     cfg.toi = 0:0.5:60;
>>> >
>>> > And finally, I end up with the monstrocity shown earlier. This problem
>>> > only
>>> > presents itself with Fieldtrip-related functions, the normal
>>> > Matlab-plots
>>> > work as well as they've ever done, so I'm thinking it's something in
>>> > Fieldtrip that's causing this.
>>> >
>>> > My hope is that someone has encountered this problem before, and knows
>>> > how
>>> > to solve it...
>>> >
>>> > Sincerely,
>>> >
>>> > Casper
>>> >
>>> >
>>> > _______________________________________________
>>> > fieldtrip mailing list
>>> > fieldtrip at donders.ru.nl
>>> > http://mailman.science.ru.nl/mailman/listinfo/fieldtrip
>>> _______________________________________________
>>> fieldtrip mailing list
>>> fieldtrip at donders.ru.nl
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>>
>>
>
>
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