# Image Registration Using the NiftyReg Library

## Documentation for package ‘RNiftyReg’ version 2.2.0

- DESCRIPTION file.
- Package NEWS.

## Help Pages

affine | Create, test for and print affine matrices
applyTransform | Apply a precomputed transformation
as.array.internalImage | Internal images
as.array.niftyreg | Two and three dimensional image registration
asAffine | Create, test for and print affine matrices
buildAffine | Build an affine matrix up from its constituent transformations
composeTransforms | Compose two transformations
decomposeAffine | Decompose an affine matrix into its constituent transformations
deformationField | Calculate the deformation field for a transformation
dim.internalImage | Internal images
dim<-.internalImage | Internal images
dumpNifti | Dump the contents of an internal NIfTI-1 object
forward | Extract forward and reverse transformations
forward.niftyreg | Extract forward and reverse transformations
halfTransform | Calculate a half transformation
internalImage | Internal images
invertAffine | Invert an affine matrix
isAffine | Create, test for and print affine matrices
isImage | Test whether an object represents an image
jacobian | Extract a Jacobian determinant map
ndim | Number of dimensions
niftyreg | Two and three dimensional image registration
niftyreg.linear | Two and three dimensional linear image registration
niftyreg.nonlinear | Two and three dimensional nonlinear image registration
pixdim | Pixel dimensions and units
pixdim<- | Pixel dimensions and units
pixunits | Pixel dimensions and units
pixunits<- | Pixel dimensions and units
print.affine | Create, test for and print affine matrices
print.niftiHeader | Dump the contents of an internal NIfTI-1 object
qform<- | Obtain or replace the "xform" transforms for an image
readAffine | Read an affine matrix from a file
readNifti | Read a NIfTI-1 format file
reverse | Extract forward and reverse transformations
reverse.niftyreg | Extract forward and reverse transformations
sform<- | Obtain or replace the "xform" transforms for an image
updateNifti | Update an internal NIfTI-1 object using a template
voxelToWorld | Transform points between voxel and "world" coordinates
worldToVoxel | Transform points between voxel and "world" coordinates
writeAffine | Write an affine matrix to a file
writeNifti | Write a NIfTI-1 format file
xform | Obtain or replace the "xform" transforms for an image