surfaceras.to.talairach | R Documentation |
Compute Talairach RAS for surface RAS (e.g., vertex coordinates).
surfaceras.to.talairach(
sras_coords,
talairach,
header_cras,
first_voxel_RAS = c(1, 1, 1)
)
sras_coords |
nx3 numerical vector, the input surface RAS coordinates. Could be the vertex coordinates of an 'fs.surface' instance, or the RAS coords from a surface label. Use the orig surfaces. |
talairach |
the 4x4 numerical talairach matrix, or a character string which will be interpreted as the path to an xfm file containing the matrix (typically '$SUBJECTS_DIR/$subject/mri/transforms/talairach.xfm'). |
header_cras |
an MGH header instance from which to extract the cras (center RAS), or the cras vector, i.e., a numerical vector of length 3 |
first_voxel_RAS |
the RAS of the first voxel, see |
The Talairach RAS coordinates for the vertices of the orig surfaces (or coords in surface RAS space). Based on linear transform.
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