[Eeglablist] Qs about single vs. double precision

[Makoto Miyakoshi]

Dear Monica,

EEGLAB has options and user can choose either single (default) or double to
use. Check EEGLAB GUI 'File' -> 'memory and other option' (something like
this)

Makoto

On Thu, Feb 12, 2015 at 9:59 AM, Monica Parelkar <mparelkar at cfri.ca> wrote:

>   Thanks Makoto for the web-links! I am a newbie in the EEG area. I
> located the webpage where I read Matlab becomes unstable with single
> precision data. I am sorry I confused this with Matlab 2014 when this
> issue was posted in 2008! Here is the link:
>
> http://sccn.ucsd.edu/pipermail/eeglablist/2008/002252.html
>
> Based on what was discussed on this weblink, does the current EEGlab by
> default store data as double precision when data is imported from EEGLab in
> floating point format?
>
> Thanks,
> Monica
>
>  ------------------------------
> *From:* Makoto Miyakoshi [mmiyakoshi at ucsd.edu]
> *Sent:* Wednesday, February 11, 2015 2:35 PM
> *To:* Monica Parelkar
> *Cc:* EEGLAB List
> *Subject:* Re: [Eeglablist] Qs about single vs. double precision
>
>   Dear Monica,
>
>  single
> http://matlab.izmiran.ru/help/techdoc/matlab_prog/ch11_st4.html#56685
>  double
> http://matlab.izmiran.ru/help/techdoc/matlab_prog/ch11_st4.html#58265
>
>  > I once read in one of your emails that Matlab 2014 becomes unstable is
> it is single precision EEG data and that double precision data is better.
>
>  Really? If you say some of EEGLAB/Matlab functions cannot handle single
> precision data since default is double, that makes sense.
>
>  Makoto
>
>
> On Fri, Feb 6, 2015 at 1:18 PM, Monica Parelkar <mparelkar at cfri.ca> wrote:
>
>>   Hi,
>>
>> I once read in one of your emails that Matlab 2014 becomes unstable is
>> it is single precision EEG data and that double precision data is better.
>> I googled up to understand what is single vs. double precision data but
>> could not find any information.
>>
>> Can someone please explain what they are or provide a weblink I can read
>> up?
>>
>> Thanks,
>> Monica
>>
>>
>> Monica Parelkar
>>
>> Research Assistant (Dept. of Psychiatry, UBC)
>>
>> CFRI-Centre for Autism Research
>>
>> 938 West 28th Avenue, 3rd floor, Workstation 3
>>
>> Vancouver, BC V5Z 4H4
>>
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>
>
>
>  --
>  Makoto Miyakoshi
> Swartz Center for Computational Neuroscience
> Institute for Neural Computation, University of California San Diego
>



-- 
Makoto Miyakoshi
Swartz Center for Computational Neuroscience
Institute for Neural Computation, University of California San Diego
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