[Mne_analysis] Topolots for each band of frequencies

[Eric Larson]

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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:
>
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>>
>> 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:
>>
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>>>
>>> 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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