[Mne_analysis] combine covariance matrix estimates for epoched data

[Wenzlaff, Hermine]

Dear all,

my data consist of 4 runs per session. I calculated the covariance matrix for epoched rawa data and want to average the covariance matrix over the 4 runs. Usually this should work with --gcov.

The problem is that in some runs there are too few / no trials so that no covariance matrix is calculated. E.g., I might have covariance matrixes from run 1 to 3 but not from 4. Then no grand average covariance matrix file is calculated.

How can I average over the covariance matrices "by hand"?

Would be very thankful if somebody could answer soon.

Cheers,

Hermine

----------------------------------

Hermine Wenzlaff

MPI for Human Development
Neurocognition of Decision Making
Koenigin-Luise-Str. 5
14195 Berlin
tel: + 49 30 82406-665
fax: + 49 30 82406-616
mobile: + 49 152 / 0179 6451

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://mail.nmr.mgh.harvard.edu/pipermail/mne_analysis/attachments/20081009/49b88a11/attachment.html