Read NIfTI {dcemri}R Documentation

Read NIfTI Format Headers and Image Files

Description

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

Usage

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)

Arguments

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.

Details

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.

Value

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.

Author(s)

Brandon Whitcher

References

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

See Also

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


[Package dcemri version 0.10.5 Index]