nifti2.extension.text

Convert the payload of a header extension to a character string. The trailing NUL bytes, which are only used to pad the extension to a multiple of 16 bytes, are removed. Note that embedded NUL bytes cannot be represented in an R string and are removed as well, so this function is only meaningful for text payloads (like the CIFTI2 XML metadata).

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.extension.text function

<dl><dt>extension</dt>
<dd>a NIFTI v2 header extension, a named list with entries 'ecode' and 'content', see <code>nifti2.extension</code>.</dd></dl>

Arguments

Get the payload of a NIFTI v2 header extension as text. — nifti2.extension.text

<dl>

<dt>extension</dt>
<dd>a NIFTI v2 header extension, a named list with entries 'ecode' and 'content', see <code>nifti2.extension</code>.</dd>

</dl>

nifti2.extension.text: Get the payload of a NIFTI v2 header extension as text.

Description

Usage

Value

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See Also