quatern_b-methods {oro.nifti}

Extract Image Attribute quatern_b

Description

Methods that act on the quatern_b field in the NIfTI/ANALYZE header.

Usage

quatern_b(object)

## S4 method for signature 'nifti'
quatern_b(object)

quatern_b(object) <- value

## S4 replacement method for signature 'nifti'
quatern_b(object) <- value

quatern.b(object)

## S4 method for signature 'nifti'
quatern.b(object)

quatern.b(object) <- value

## S4 replacement method for signature 'nifti'
quatern.b(object) <- value

## S4 method for signature 'niftiImage'
quatern_b(object)

## S4 replacement method for signature 'niftiImage'
quatern_b(object) <- value

Arguments

object

is an object of class nifti or anlz.

value

is the value to assign to the quatern_b field.

Details

See documentation on the ANALYZE and/or NIfTI data standards for more details.

Author(s)

John Muschelli [e-mail],
Brandon Whitcher [e-mail]

References

ANALYZE 7.5
http://eeg.sourceforge.net/ANALYZE75.pdf
NIfTI-1
http://nifti.nimh.nih.gov/

Examples

file = system.file("extdata", "example.nii.gz", package = "RNifti")
img = RNifti::readNifti(file)
quatern_b(img)
quatern_b(img) = 3
stopifnot(quatern_b(img) == 3)
quatern_c(img)
quatern_c(img) = 3
stopifnot(quatern_c(img) == 3)
quatern_d(img)
quatern_d(img) = 3
stopifnot(quatern_d(img) == 3)