validate.fs.transform

This checks the invariants that every <code>fs.transform</code> must fulfill: it is a named list with a
finite 4x4 numerical matrix, a known or unknown coordinate space for both sides, a voxel base that matches
those spaces, and volume descriptors that only contain supported entries. It is called automatically by the
constructor, so that readers, writers and user code can rely on the fields.

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) 

validate.fs.transform function

<dl><dt>tf</dt>
<dd>the object to check.</dd></dl>

Arguments

Check whether an object is a valid fs.transform instance. — validate.fs.transform

<dl>

<dt>tf</dt>
<dd>the object to check.</dd>

</dl>

validate.fs.transform: Check whether an object is a valid fs.transform instance.

Description

Usage

Value

Arguments