Extract Image Attribute cal_max — cal

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

cal_max(object)

# S4 method for nifti
cal_max(object)

# S4 method for anlz
cal_max(object)

cal_max(object) <- value

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

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

cal.max(object)

# S4 method for nifti
cal.max(object)

# S4 method for anlz
cal.max(object)

cal.max(object) <- value

# S4 method for nifti
cal.max(object) <- value

# S4 method for anlz
cal.max(object) <- value

# S4 method for niftiImage
cal.max(object)

# S4 method for niftiImage
cal.max(object) <- value

# S4 method for niftiImage
cal_max(object)

# S4 method for niftiImage
cal_max(object) <- value

Arguments

object	is an object of class `nifti` or `anlz`.
value	is the value to assign to the `cal_max` 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

if (FALSE) {
url <- "http://nifti.nimh.nih.gov/nifti-1/data/avg152T1_LR_nifti.nii.gz"
urlfile <- file.path(system.file("nifti", package="oro.nifti"),
                     "mniLR.nii.gz")
download.file(url, urlfile, quiet=TRUE)
}
urlfile <- file.path(system.file("nifti", package="oro.nifti"),
                     "mniLR.nii.gz")
mniLR <- readNIfTI(urlfile)
cal.max(mniLR)
#> [1] 255
file = system.file("extdata", "example.nii.gz", package = "RNifti")
img = RNifti::readNifti(file)
cal.max(img)
#> [1] 2503
cal_max(img)
#> [1] 2503
cal.max(img) = 2500
stopifnot(cal_max(img) == 2500)
cal_max(img) = 2500
cal.min(img)
#> [1] 0
cal.min(img) = 2
stopifnot(cal_min(img) == 2)
cal_min(img)
#> [1] 2
cal_min(img) = 0
stopifnot(cal_min(img) == 0)