When I run mcflirt via feat, it creates an mc directory under which is a
prefiltered_func_data_mcf.mat directory which has a bunch of MAT_????
files with 4x4 matrices. I had thought that this would be the matrix
equivalent of the rotations and translations found in the
prefiltered_func_data_mcf.par file.
The rotations do match, but I'm having a problem reconciling the
translations. Eg,
cat prefiltered_func_data_mcf.mat/MAT_0000
1.000000 0.000130 -0.000365 -0.030460
-0.000129 1.000000 0.000970 -0.058024
0.000365 -0.000970 0.999999 -0.006929
0.000000 0.000000 0.000000 1.000000
head -n 1 prefiltered_func_data_mcf.par
0.000969584 0.000364679 0.00012981 -0.0411323 -0.00362382 -0.080172
I would have thought that the translations in the .par (the last 3 cols)
would be the same as the last row in the MAT file, but (obviously) they
are not. I think the values in the .par are the correct translations,
but then what are the values in the MAT file? Or am I just
misinterpreting something?
thanks!
doug
--
Douglas N. Greve, Ph.D.
MGH-NMR Center
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