nrrd.type.info

The NRRD spec names the data type of the values with a set of aliases for the
standard integer and floating point types ('uint8', 'unsigned char', 'uchar', ...), see
<code>https://teem.sourceforge.net/nrrd/format.html</code>. The 64 bit integer types have no R
equivalent and are read as doubles, which is exact up to 2^53.

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) 

nrrd.type.info function

<dl><dt>type_name</dt>
<dd>character string, the value of the 'type' header field.</dd>
<dt>filepath</dt>
<dd>character string, the file the header was read from, used in error messages.</dd></dl>

Arguments

Convert the NRRD type name of a volume into R data type information. — nrrd.type.info

<dl>

<dt>type_name</dt>
<dd>character string, the value of the 'type' header field.</dd>


<dt>filepath</dt>
<dd>character string, the file the header was read from, used in error messages.</dd>

</dl>

nrrd.type.info: Convert the NRRD type name of a volume into R data type information.

Description

Usage

Value

Arguments