[Eeglablist] tftopo extrema extraction

[sara.kamali at uam.es]

The problem is solved! The time points in the tftopo plot are  
distributed randomly and not uniform. I used the timef matrix, instead  
of the indices of max/min and now the locations of the extrema are  
accurate.

Quoting Sara Kamali via eeglablist <eeglablist at sccn.ucsd.edu>:

> Hi!
>
> I am trying to extract the extrema on the tftopo plot, to the brain  
> topography at those points. I have tried both rms and average mode,  
> but the max/min that I extract from the data does not match the plot.
> I refered to tfdat function, but in the line:
> tfmask  = sum(tfdat ~= 0,dim) >= thresh;
> I do not know what should be the value of thresh. I did not find  
> where its value has been assigned in the code. And when I use the  
> format of (tfdat   = tfmask.*mean(tfdat,dim);) without any threshold  
> on tfmask, my extrema do not match the plot.
>
> I would be thankful if you could kindly help me with this.
>
> Best,
> Sara
>
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