Add Random Standard Gaussian Noise Image using FSL

Source: R/fsl_randn.R, R/fslrandn.R

This function calls fslmaths -randn. The R functions wraps fslmaths

fsl_randn(..., outfile = tempfile(fileext = ".nii.gz"), retimg = FALSE)

fslrandn(
  file,
  outfile = NULL,
  retimg = TRUE,
  reorient = FALSE,
  intern = FALSE,
  opts = "",
  ...
)

Arguments

...

additional arguments passed to readnii.
outfile

(character) resultant image name (optional)
retimg

(logical) return image of class nifti
file

(character) input image to add random standard to Gaussian noise
reorient

(logical) If retimg, should file be reoriented when read in? Passed to readnii.
intern

(logical) to be passed to system
opts

(character) operations to be passed to fslmaths

Value

If retimg then object of class nifti. Otherwise, Result from system command, depends if intern is TRUE or FALSE.

Note

Functions with underscores have different defaults and will return an output filename, so to be used for piping