Extract forward and reverse transformations

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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

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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