[Mne_analysis] Topolots for each band of frequencies

[Dan McCloy]

        External Email - Use Caution        

Sundar, Have you looked at Evoked.animate_topomap
<https://mne-tools.github.io/dev/generated/mne.Evoked.html#mne.Evoked.animate_topomap>
?

On Thu, Apr 18, 2019 at 6:11 PM Sundar N <suntracks at gmail.com> wrote:

>         External Email - Use Caution
>
> Thanks Dan and Eric,
> They were some very helpful suggestions.
>
> Now i have them working with band specific topoplots.
> I am trying to animate the sequence with topoplots  like a movie , here i
> am hit with the issue of refresh rate where in the animation is not smooth.
> Could be because of the text output from the function.
>
> plot= epochs.plot_psd_topomap(ch_type='eeg', normalize=True,verbose=False)
> plot=evoked.plot_topomap(
> ch_type='eeg',times=times,sensors=False,show_names=True, title='Alpha')
>
> how do i disable this text output and retain only the plots. This could
> help in smoother animated plot with matplotlib functions.
>
> Regards,
> Sundar.
>
>
> On Thu, Apr 18, 2019 at 7:31 AM Eric Larson <larson.eric.d at gmail.com>
> wrote:
>
>>         External Email - Use Caution
>>
>> You could also turn the Evoked object into an Epochs object using
>> EpochsArray
>>
>> epo = EpochsArray(evoked.data[np.newaxis], evoked.info)
>>
>> And then you could probably use the epoch-based plotter.
>>
>> Eric
>>
>>
>> On Wed, Apr 17, 2019 at 5:53 PM Dan McCloy <dan.mccloy at gmail.com> wrote:
>>
>>>         External Email - Use Caution
>>>
>>> Hi Sundar,
>>> Unfortunately the plot_topomap method of Evoked objects does not have
>>> the `bands` argument like the Epochs.plot_psd_topo method does.
>>>
>>> I think the general approach would be:
>>> 1. read in your evoked data from CSV format into a NumPy array
>>> 2. use mne.EvokedArray()
>>> <https://mne-tools.github.io/dev/generated/mne.EvokedArray.html> to
>>> convert it to an MNE Evoked object
>>> 3. use Evoked.filter()
>>> <https://mne-tools.github.io/dev/generated/mne.Evoked.html?highlight=evoked%20filter#mne.Evoked.filter>
>>> method to isolate the frequency band
>>> 4. use Evoked.plot_topomap method to plot (see this tutorial
>>> <https://mne-tools.github.io/dev/auto_examples/visualization/plot_evoked_topomap.html>
>>> for examples)
>>>
>>>
>>> On Tue, Apr 16, 2019 at 10:06 PM Sundar N <suntracks at gmail.com> wrote:
>>>
>>>>         External Email - Use Caution
>>>>
>>>> Thanks Mary,
>>>> This is very helpful, however can i do the same with evoked data, as i
>>>> have non - epoched eeg data .
>>>> This is in csv format with just channel numbers .
>>>>
>>>> Regards,
>>>> Sundar.
>>>>
>>>> On Sun, Apr 14, 2019 at 11:06 AM Maryam Zolfaghar <
>>>> Maryam.Zolfaghar at colorado.edu> wrote:
>>>>
>>>>>         External Email - Use Caution
>>>>>
>>>>> Hi,
>>>>>
>>>>> The following link might be helpful:
>>>>>
>>>>>
>>>>> https://martinos.org/mne/stable/auto_tutorials/plot_sensors_time_frequency.html
>>>>>
>>>>> -Mary
>>>>>
>>>>> On Sat, Apr 13, 2019 at 11:28 PM Sundar N <suntracks at gmail.com> wrote:
>>>>>
>>>>>>         External Email - Use Caution
>>>>>>
>>>>>> HI ,
>>>>>> Is there a way to generate topoplots for only a particular frequency
>>>>>> band of ERP data? I would like to generate  topoplots for each frequency
>>>>>> band separately to visualize alpha / delta / beta bands activations in the
>>>>>> topoplots . As of now am able to generate a generic topoplots with mne
>>>>>> libraries. Would like to tweak this to make it frequency band specific.
>>>>>> Any help here appreciated.
>>>>>>
>>>>>> Regards,
>>>>>> Sundar.
>>>>>> _______________________________________________
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