transform.world.frame

The world space that a transformation between voxel coordinates refers to depends on the format
it was read from: an FSL matrix uses the FSL convention, see <code>fsl.scaled.voxel.matrix</code>, while the
matrices of the other formats use the RAS space of the volume headers. The frame is taken from the volume
descriptors if they state it and is derived from the format otherwise, so that
<code>transform2world</code> and <code>transform2voxel</code> always agree.

internal

Provides functions to read and write neuroimaging data in various file formats, with a focus on 'FreeSurfer' formats. This includes, but is not limited to, the following file formats: 1) MGH/MGZ/NIFTI format files, which can contain multi-dimensional images or other data. Typically they contain time-series of three-dimensional brain scans acquired by magnetic resonance imaging (MRI). They can also contain vertex-wise measures of surface morphometry data. The MGH format is named after the Massachusetts General Hospital, and the MGZ format is a compressed version of the same format. 2) 'FreeSurfer' morphometry data files in binary 'curv' format. These contain vertex-wise surface measures, i.e., one scalar value for each vertex of a brain surface mesh. These are typically values like the cortical thickness or brain surface area at each vertex. 3) Annotation file format. This contains a brain surface parcellation derived from a cortical atlas. 4) Surface file format. Contains a brain surface mesh, given by a list of vertices and a list of faces.

Tim Schc3<a4>fer

freesurferformats

Read and Write 'FreeSurfer' Neuroimaging File Formats

Tim Schäfer

Van Essen Lab 

Montreal Neurological Institute (MNI) 

transform.world.frame function

<dl><dt>tf</dt>
<dd>an <code>fs.transform</code> instance.</dd></dl>

Arguments

Determine the frame of the world space of a transformation. — transform.world.frame

<dl>

<dt>tf</dt>
<dd>an <code>fs.transform</code> instance.</dd>

</dl>

transform.world.frame: Determine the frame of the world space of a transformation.

Description

Usage

Value

Arguments