[Mne_analysis] Coordinates of dipoles in fwd['sol']['data']?

[VERRIER Clement]

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Hi,

As far as I know, first columns in fwd['sol']['data'] correspond to the left hemisphere dipoles, and the next columns correspond to the dipoles located on the right hemisphere.

Best,
Clément

On 6 May 2021, at 10:58 AM, Karin Westin <karin.westin85 at gmail.com<mailto:karin.westin85 at gmail.com>> wrote:


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Thank you for your answer!

But from that I get
 np.shape(right_coords)  (16382, 3) and
np.shape(fwd['sol']['data'])  (130, 98268)

so I still don't understand how to extract coordinates of dipole in column j of fwd['sol']['data']?

Thanks in advance,
Karin

Den tors 6 maj 2021 kl 07:54 skrev VERRIER Clement <clement.VERRIER at univ-amu.fr<mailto:clement.VERRIER at univ-amu.fr>>:

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Hello,

You should be able to extract the dipoles coordinates of each hemisphere using the following (works with version 0.22.1):

>>> left_hemi, right_hemi = fwd["src"]
>>> left_coords, right_coords = [hemi["rr"][hemi["vertno"]] for hemi in [left_hemi, right_hemi]]

If you want all coordinates (i.e. those associated with the nondecimated mesh), you just have to use remove the extra hemi["vertno"] slicing.

Hope it helps!

Best,
Clément


On 6 May 2021, at 12:54 AM, Karin Westin <karin.westin85 at gmail.com<mailto:karin.westin85 at gmail.com>> wrote:


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Hi all!

As I understood it, the matrix fwd['sol']['data'] represents sensors x dipoles. How can one extract the coordinates of these dipoles?

Thanks in advance,
Karin
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