R: Extract forward and reverse transformations

forward {RNiftyReg} | R Documentation

## Extract forward and reverse transformations

### Description

These functions extract forward and reverse transformations in a form compatible with `applyTransform` and other functions. They are (S3) generic, but only methods for `"niftyreg"` objects currently exist.

### Usage

    forward(object, ...)

    ## S3 method for class 'niftyreg'
    forward(object, i = 1, ...)

    reverse(object, ...)

    ## S3 method for class 'niftyreg'
    reverse(object, i = 1, ...)

### Arguments

`object` | An R object.
`...` | Additional arguments. Not currently used.
`i` | The transformation number to extract. There will only be more than one in the case of multiple registration.

### Value

A transformation object, an image or affine matrix, with suitable attributes giving pointers to source and target images. If there is no transformation information in the object then `NULL` is returned.

### Author(s)

Jon Clayden <code@clayden.org>

### See Also

`niftyreg`, `applyTransform`

[Package RNiftyReg version 2.6.0 Index]