mghheader.ras2vox: Compute ras2vox matrix from basic MGH header fields.

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

Compute ras2vox matrix from basic MGH header fields.

Description

This is also known as the 'scanner' or 'native' ras2vox. It is the inverse of the respective vox2ras, see mghheader.vox2ras.

Usage

mghheader.ras2vox(header)

Arguments

header

the MGH header

Value

4x4 numerical matrix, the transformation matrix

See Also

sm1to0

Other header coordinate space: mghheader.is.ras.valid(), mghheader.ras2vox.tkreg(), mghheader.scanner2tkreg(), mghheader.tkreg2scanner(), mghheader.vox2ras(), mghheader.vox2ras.tkreg(), read.fs.transform(), read.fs.transform.dat(), read.fs.transform.lta(), read.fs.transform.xfm(), sm0to1(), sm1to0()

Examples

    brain_image = system.file("extdata", "brain.mgz",
                               package = "freesurferformats",
                               mustWork = TRUE);
    vdh = read.fs.mgh(brain_image, with_header = TRUE);
    mghheader.ras2vox(vdh$header);

freesurferformats documentation built on Sept. 9, 2025, 5:44 p.m.