freesurferformats (version 0.1.18)

mghheader.vox2ras: Compute vox2ras matrix from basic MGH header fields.

Description

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

Usage

mghheader.vox2ras(header)

Value

4x4 numerical matrix, the transformation matrix

Arguments

header

the MGH header

See Also

sm0to1

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

Examples

    brain_image = system.file("extdata", "brain.mgz",
                               package = "freesurferformats",
                               mustWork = TRUE);
    vdh = read.fs.mgh(brain_image, with_header = TRUE);
    mghheader.vox2ras(vdh$header);