[Mne_analysis] How to edit time attribute in a raw object

[Phillip Alday]

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The time in the raw recordings (the Raw object) are assumed to be 
arbitrary and just a measure of time elapsed since the beginning of the 
recording, so there's not really a way to set or manipulate them. Why do 
you need absolute time here? Are you concatenating Raw objects?

Best,
Phillip

On 4/11/19 10:55 am, Vahid Bokharaie wrote:
>          External Email - Use Caution
> 
> Hi all
> I posted this question in stackoverflow but seems MNE community is not 
> active there, hence I searched for MNE mailing list and joined it.
> I use MNE for analysis of both rat and human EEG recordings. The system 
> we have for rat EEG is from a company called NeuroNexus, and they have 
> their own Matlab script to convert the EEG recordings and the time 
> stamps into mat files. And then I import them in python and use MNE to 
> analyse and visualise them. This means I have to establish my EEG raw 
> objects from the scratch and save them to file, which I can do. But a 
> seemingly trivial thing that I have not managed to find out how to do is 
> to incorporate the time array into the EEG raw object. When I create and 
> save the EEG raw object, it automatically set the initial time to 0, but 
> my initial recording time is not 0 and I need to offset that. It is 
> important to correct this, because the time stamps of EEG and 
> behavioural data should match.
> Simply typing |raw.times = new_array| leads to |AttributeError: can't 
> set attribute. ||This should be a very simple thing to do, but I have 
> not been able to find it although I have looked into the documentation. 
> So, I thought to ask it in here and if it is not really possible, then 
> dig into the source code to fix it myself. Thanks in advance.
> Regards,
> Vahid
> |
> 
> -- 
> ---------------------------------------------------------------------------------------
> Vahid S. Bokharaie, PhD
> Senior Research Scientist
> Max Planck Institute for Biological Cybernetics
> Department of Physiology of Cognitive Processes
> Max Planck Ring 8, 72076 Tuebingen,  Germany
> +49 (0)7071 - 601-1644
> vahid.bokharaie at tuebingen.mpg.de
> https://www.kyb.tuebingen.mpg.de/person/59086/84548
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