read_nifti: Read NIfTI Format Headers and Image Files
In dcemri: A Package for Medical Image Analysis

Description Usage Arguments Details Value Author(s) References See Also

These functions read in the header information and multidimensional array from a binary file in NIfTI-1 format.

read.nifti.hdr(fname, onefile=TRUE, gzipped=TRUE, verbose=FALSE,
               warn=-1)
read.nifti.img(fname, onefile=TRUE, gzipped=TRUE, verbose=FALSE,
               warn=-1, ignoreQform=FALSE, ignoreSform=FALSE)

`fname`	Pathname of the NIfTI file(s).
`onefile`	Allows the scanning of single-file format (.nii) or dual-file format (.hdr and .img) NIfTI files.
`gzipped`	Allows the importation of compressed (.gz) files.
`verbose`	is a logical variable (default = `FALSE`) that allows text-based feedback during execution of the function.
`warn`	is a number to regulate the display of warnings (default = -1). See `options` for more details.
`ignoreQform`	is a logical variable (default = `FALSE`) that ignores any ‘qform’ infomration in the NIfTI header.
`ignoreSform`	is a logical variable (default = `FALSE`) that ignores any ‘sform’ infomration in the NIfTI header.

Both functions utilize the internal readBin and readChar command to efficiently extract information from the binary file(s). The types of data are limited to 1- and 2-byte integers, 4-byte floats and 8-byte doubles.

read.nifti.hdr returns a list containing all the fields from the header file. read.nifti.img returns a multidimensional array depending on the fields obtained from the header file.

Brandon Whitcher

NIfTI-1 http://nifti.nimh.nih.gov/

read.analyze.hdr, read.analyze.img, write.nifti.img

dcemri documentation built on May 2, 2019, 5:27 p.m.