talairachras.to.ras: Compute MNI talairach coordinates from RAS coords.

In freesurferformats: Read and Write 'FreeSurfer' Neuroimaging File Formats

Description

Compute MNI talairach coordinates from RAS coords.

Usage

talairachras.to.ras(tal_ras_coords, talairach)

Arguments

tal_ras_coords	coordinate matrix in Talairach RAS space
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').

Value

the Talairach RAS coordinates for the given RAS coordinates. They are based on a linear transform.

Note

You can use this to compute the Talairach coordinate of a voxel, based on its RAS coordinate.

References

see https://en.wikipedia.org/wiki/Talairach_coordinates

freesurferformats documentation built on Feb. 11, 2022, 5:06 p.m.