Compute RAS coords of center voxel.

Compute RAS coords of center voxel.

mghheader.centervoxelRAS.from.firstvoxelRAS(header, first_voxel_RAS)

Arguments

header	Header of the mgh datastructure, as returned by read.fs.mgh. The `c_r`, `c_a` and `c_s` values in the header do not matter of course, they are what is computed by this function.
first_voxel_RAS	numerical vector of length 3, the RAS coordinate of the first voxel in the volume. The first voxel is the voxel with `CRS=1,1,1` in R, or `CRS=0,0,0` in C/FreeSurfer. This value is also known as *P0 RAS*.

Value

numerical vector of length 3, the RAS coordinate of the center voxel. Also known as *CRAS* or *center RAS*.