Extract Image Attribute origin

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

origin(object)

# S4 method for nifti
origin(object)

# S4 method for anlz
origin(object)

# S4 method for ANY
origin(object)

origin(object) <- value

# S4 method for anlz
origin(object) <- value

# S4 method for nifti
origin(object) <- value

Arguments

object	is an object of class nifti or anlz.
value	is the value to assign to the origin field.

Details

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

References

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

Author

John Muschelli muschellij2@gmail.com,
Brandon Whitcher bwhitcher@gmail.com

Examples

fname = system.file("nifti", "mniRL.nii.gz", 
package = "oro.nifti")
img = readNIfTI(fname)
oimg = origin(img)
stopifnot(all(oimg == c(-90, -126, -72)))
zero_img = img
origin(zero_img) = rep(0, 3)
stopifnot(all(origin(zero_img) == 0))