Constructor for NIfTI

Source: R/niftiS4.R

Constructor for NIfTI class objects.

nifti(
  img = array(0, dim = rep(1, 4)),
  dim,
  datatype = 2,
  cal.min = NULL,
  cal.max = NULL,
  pixdim = NULL,
  ...
)

Arguments

img

is a multidimensional array of data.
dim

is the dimension of the data (default = missing).
datatype

is an integer that denotes the type of data contained in each voxel. See convert.datatype or the NIfTI documentation for more details.
cal.min

allows user-specified minimum value in the array (visualization purposes only).
cal.max

allows user-specified minimum value in the array (visualization purposes only).
pixdim

allows user-specified pixel dimension vector (length = 8).
...

allows for additional ‘slots’ to be specified.

Value

An object of class nifti.

References

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

See also

nifti, anlz, convert.datatype

Author

Brandon Whitcher bwhitcher@gmail.com

Examples


options("niftiAuditTrail"=FALSE)

nim <- nifti() # default
nim
#> NIfTI-1 format
#>   Type            : nifti
#>   Data Type       : 2 (UINT8)
#>   Bits per Pixel  : 8
#>   Slice Code      : 0 (Unknown)
#>   Intent Code     : 0 (None)
#>   Qform Code      : 0 (Unknown)
#>   Sform Code      : 0 (Unknown)
#>   Dimension       : 1 x 1 x 1 x 1
#>   Pixel Dimension : 1 x 1 x 1 x 1
#>   Voxel Units     : Unknown
#>   Time Units      : Unknown
nim <- nifti(datatype=4) # 2-byte integers
nim
#> NIfTI-1 format
#>   Type            : nifti
#>   Data Type       : 4 (INT16)
#>   Bits per Pixel  : 16
#>   Slice Code      : 0 (Unknown)
#>   Intent Code     : 0 (None)
#>   Qform Code      : 0 (Unknown)
#>   Sform Code      : 0 (Unknown)
#>   Dimension       : 1 x 1 x 1 x 1
#>   Pixel Dimension : 1 x 1 x 1 x 1
#>   Voxel Units     : Unknown
#>   Time Units      : Unknown