[FieldTrip] Sourceplots suddenly have huge file size

["Jens Klinzing, Universität Tübingen"]

Hi Arjen,
that's good news!

Thanks for your help,
Jens

Am 09.10.2014 19:06, schrieb Stolk, A. (Arjen):
> Hi Jens,
>
> It seems the grey values for the cortex/surface were changed during a previous code change. I've changed the grey values to match the old ones, so your plots should presumably look like you're used to with tomorrow's version of FT.
>
> Best,
> Arjen
>
> --
> Donders Institute for Brain, Cognition and Behaviour
> Centre for Cognitive Neuroimaging
> Radboud University Nijmegen
>
> Email:  a.stolk at donders.ru.nl<mailto:a.stolk at donders.ru.nl>
> Phone:  +31(0)243 68294
> Web:    www.arjenstolk.nl<http://www.arjenstolk.nl>
> ________________________________
> From: fieldtrip-bounces at science.ru.nl [fieldtrip-bounces at science.ru.nl] on behalf of "Jens Klinzing, Universität Tübingen" [jens.klinzing at uni-tuebingen.de]
> Sent: Thursday, October 09, 2014 6:32 PM
> To: FieldTrip discussion list
> Subject: Re: [FieldTrip] Sourceplots suddenly have huge file size
>
> Hi Erik,
> wow, I really wouldn't have thought this could work ... but it did! It resulted in a reduction of the file size from 4.6 GB down to 9 MB (for the result of a statistical cluster permutation test).
>
> I still have a brain with a very dark color, though. Does anyone know how to get rid of that?
> Why would these things change without an obvious reason?
>
> Thanks for your help, Eric!!
> All the best,
> Jens
>
> Am 09.10.2014 13:46, schrieb Erik te Woerd:
> Hi Jens,
>
> The problem might be that the cfg.previous-structure is becoming quite large. Try to clear this before plotting the data, like:
> data.cfg.previous = [];
>
> This is especially helpful when plotting grandaverage-data. (I've seen cases in which the size went from 13 GB to 150 MB just by clearing the cfg.previous)
>
> Best,
>
> Erik
>
>
>
> 2014-10-09 11:51 GMT+02:00 "Jens Klinzing, Universität Tübingen" <jens.klinzing at uni-tuebingen.de<mailto:jens.klinzing at uni-tuebingen.de>>:
> Dear fieldtrip community,
> I encountered a weird problem. Lately, my source plots started to have
> huge file sizes when I save them as figures (.fig). This applies to both
> slice and surface plots. Surface plots used to have around 3-7 MB, now
> they have around 220 MB or even > 4 GB (ie. almost the size of the
> plotted data set). They also look slightly different now, with the
> surface being way darker than before. Slice plots look the same but are
> also larger than before.
>
> The problem seems to be in the plotting process itself (not the
> beamforming). When I plot older source localizations (which by the way
> have the same file size, fields, and basic properties as newer ones) the
> problem is still there.
>
> The code I am using for plotting did (to the best of my knowledge) not
> change at all:
> cfg                                     = [];
> cfg.method                      = 'surface';
> cfg.funparameter            = 'avg.pow';
> cfg.maskparameter         = cfg.funparameter;
> cfg.funcolormap              = 'jet';
> cfg.projmethod                = 'nearest';
> cfg.surfdownsample        = 5;
> ft_sourceplot(cfg,data)
>
> I thought it may be a change in fieldtrip so I reverted my ft_sourceplot
> to an older version but that did not help. I also used an older Matlab
> version (currently I use 2013b but I also tried 2013a) and another
> computer (Windows and Unix). In all cases I used opengl as the renderer.
>
> I am sure it is something very simple and I'm just too blind to see it.
> Any suggestions?
>
> Thanks a lot for your help,
> Jens
>
>
>
>
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