[FieldTrip] Single Precision in FieldTrip (2011)

"Jörn M. Horschig" jm.horschig at donders.ru.nl
Mon Feb 14 16:18:36 CET 2011

Dear all,

This mail can be considered as a follow-up from an issue raised back in 
2006 - just a little bit more recent (btw, there maybe should a more 
user-friendly interface to search in the FT mailing archive, it took 
some time to check if this question has been brought up before).

Today, I was thinking about ways to reduce the memory use of 
FieldTrip/Matlab especially when handling large amount of data - other 
ways than using machines with huge memory capacities. In the old mailing 
list, I found a mail conversation started by Ali M. about single 
precision in 2006. Matlab, and FieldTrip, has advanced quite a lot since 
then, which resulted in removing at least that one particular Matlab-bug 
on my machine ;) However, in the past I have found that computations 
using single precision still yields problems such as wrong results or 
also incompatibilty of certain functions/operations. I wonder how severe 
these problems are with current Matlab/FieldTrip versions.

Does anyone have experience with single precision computations using 
FieldTrip? Is it valid or even advisable to use single precision 
FYI, my machine runs Win7 64-bit and Matlab (R2009b)

Kind regards,

Jörn M. Horschig
PhD Student
Donders Institute for Brain, Cognition and Behaviour
Centre for Cognitive Neuroimaging
Radboud University Nijmegen

P.O. Box 9101
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E-Mail: jm.horschig at donders.ru.nl
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