[Mne_analysis] Need Help to do Cross Spectral Density Analysis

MD KHORSHED ALAM khorshed.alam at live.iium.edu.my
Mon Jan 15 03:18:20 EST 2018
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Hi,


Thank you and unfortunately, still getting the same errors after executing the recommended codes.


I am using WIN 64-bits, Python 2.7.14.


I have checked the following code:

import sys
sys.maxint

Output:  2147483647 (32-bits integer value )

I think, because of this may get the errors. Please anyone helps me to update my 'sys' to 64-bits integer value?



Thanks With Warm Regards,

MD. KHORSHED ALAM (Shishir)

Graduate Research Assistant (GRA)

Center of Intelligent Signal and Imaging Research (CISIR)
Department of Electrical and Electronic Engineering
Universiti Teknologi PETRONAS
Bandar Seri Iskandar
32610 Tronoh
Perak Darul Ridzuan
Malaysia

Mobile no: +60176459080
Email ID: khorshed.alam at live.iium.edu.my<mailto:khorshed.alam at live.iium.edu.my>
Alternative :shishir_lmu at yahoo.com<mailto:shishir_lmu at yahoo.com>, alam.0213 at gmail.com<mailto:alam.0213 at gmail.com>

________________________________
From: mne_analysis-bounces at nmr.mgh.harvard.edu <mne_analysis-bounces at nmr.mgh.harvard.edu> on behalf of Brunner, Clemens (clemens.brunner at uni-graz.at) <clemens.brunner at uni-graz.at>
Sent: Sunday, January 14, 2018 4:46:36 PM
To: Discussion and support forum for the users of MNE Software
Subject: Re: [Mne_analysis] Need Help to do Cross Spectral Density Analysis

Hi!

I don’t really understand why the array is of type int64 (and why that matters - are you on Python 2)?

Can you try if this minimal example works for you:

import mne
import numpy as np

X = np.random.rand(320, 60, 421)
csd = mne.time_frequency.csd_array(X, 128)

Clemens


> On Jan 14, 2018, at 11:15, MD KHORSHED ALAM <khorshed.alam at live.iium.edu.my> wrote:
>
> Hi,
> Thank you for your suggestion.
> However,
> Code: epochs = mne.Epochs(eeg_channels, events=events, event_id=event_id, tmin=-0.2, tmax=0.5, proj=True, baseline=(None, 0), preload=True)
> X=epochs['aud_l', 'aud_r', 'vis_l', 'vis_r', 'smiley', 'button'].get_data()
> print(X.shape)
> Output:
> 320 matching events found
> 3 projection items activated
> Loading data for 320 events and 421 original time points ...
> 0 bad epochs dropped
> (320L, 60L, 421L)
>
>
> Then i have applied 3D array 'X' to:  mne.time_frequency.csd_array(X, sfreq, mode='multitaper', fmin=0, fmax=35.0, fsum=False, n_fft=None, mt_bandwidth=None, mt_adaptive=False, mt_low_bias=True, verbose=None)
>
> But still getting the following errors:
>
> ValueError
>                                 Traceback (most recent call last)
>
> <ipython-input-177-d7b62b6f3fe7> in <module>()
> ----> 1 mne.time_frequency.csd_array(X, sfreq, mode='multitaper', fmin=0, fmax=35.0, fsum=False, n_fft=None, mt_bandwidth=None, mt_adaptive=False, mt_low_bias=True, verbose=None)
>
> ValueError: when using select="i", select_range must contain integers, got dtype int64
>
>
> Thanks With Warm Regards,
> MD. KHORSHED ALAM (Shishir)
> Graduate Research Assistant (GRA)
> Center of Intelligent Signal and Imaging Research (CISIR)
> Department of Electrical and Electronic Engineering
> Universiti Teknologi PETRONAS
> Bandar Seri Iskandar
> 32610 Tronoh
> Perak Darul Ridzuan
> Malaysia
> Mobile no: +60176459080
> Email ID: khorshed.alam at live.iium.edu.my
> Alternative :shishir_lmu at yahoo.com, alam.0213 at gmail.com
>
> From: mne_analysis-bounces at nmr.mgh.harvard.edu <mne_analysis-bounces at nmr.mgh.harvard.edu> on behalf of Brunner, Clemens (clemens.brunner at uni-graz.at) <clemens.brunner at uni-graz.at>
> Sent: Tuesday, January 9, 2018 8:40:03 AM
> To: Discussion and support forum for the users of MNE Software
> Subject: Re: [Mne_analysis] Need Help to do Cross Spectral Density Analysis
>
> Hi!
>
> You can use the get_data method on your Epochs object, e.g.
>
> X = epochs.get_data()
>
> will return a 3D array of the desired shape.
>
> HTH
> Clemens
>
>
> > On Jan 9, 2018, at 07:25, MD KHORSHED ALAM <khorshed.alam at live.iium.edu.my> wrote:
> >
> > Hi,
> >
> > I want to do CSD analysis on EEG data but facing problem with the following function:
> >
> > csd_array(X, sfreq, mode='multitaper' fmin=0 fmax=np.inf, fsum=True, n_fft=None, mt_bandwidth=None, mt_adaptive=False, mt_low_bias=True, verbose=None):
> >
> > I am unable to extract the "X" parameter values. Can you let me know the file where "X" (data matrix) structure is defined in order to have a better idea about "X" parameter.
> >
> > Thank you.
> >
> >
> >
> >
> >
> > Thanks With Warm Regards,
> > MD. KHORSHED ALAM (Shishir)
> > Graduate Research Assistant (GRA)
> > Center of Intelligent Signal and Imaging Research (CISIR)
> > Department of Electrical and Electronic Engineering
> > Universiti Teknologi PETRONAS
> > Bandar Seri Iskandar
> > 32610 Tronoh
> > Perak Darul Ridzuan
> > Malaysia
> > Mobile no: +60176459080
> > Email ID: khorshed.alam at live.iium.edu.my
> > Alternative :shishir_lmu at yahoo.com, alam.0213 at gmail.com
> >
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