surfaceras.to.ras | R Documentation |
Translate surface RAS coordinates, as used in surface vertices and surface labels, to volume RAS.
surfaceras.to.ras(
header_cras,
sras_coords,
first_voxel_RAS = c(1, 1, 1),
invert_transform = FALSE
)
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 |
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. |
first_voxel_RAS |
the RAS of the first voxel, see |
invert_transform |
logical, whether to invert the transform. Do not use this, call |
the RAS coords for the input sras_coords
The RAS can be computed from Surface RAS by adding the center RAS coordinates, i.e., it is nothing but a translation.
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