nifti2.get.extension

Retrieve one header extension from a NIFTI v2 header, by its extension code. See <code>nifti2.extension</code> for details on header extensions.

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) 

nifti2.get.extension function

<dl><dt>niiheader</dt>
<dd>named list, a NIFTI v2 header as returned by <code>read.nifti2.header</code> or created by <code>ni2header.template</code>.</dd>
<dt>ecode</dt>
<dd>integer, the extension code to search for. The CIFTI2 XML metadata uses code <code>32L</code>.</dd></dl>

Arguments

Get a NIFTI v2 header extension by code. — nifti2.get.extension

<dl>

<dt>niiheader</dt>
<dd>named list, a NIFTI v2 header as returned by <code>read.nifti2.header</code> or created by <code>ni2header.template</code>.</dd>


<dt>ecode</dt>
<dd>integer, the extension code to search for. The CIFTI2 XML metadata uses code <code>32L</code>.</dd>

</dl>

nifti2.get.extension: Get a NIFTI v2 header extension by code.

Description

Usage

Value

Arguments

See Also