mat34.to.TRSZ: Affine 4x4 (or 3x4) matrix to Translation, Rotation, Shear...
In AnalyzeFMRI: Functions for Analysis of fMRI Datasets Stored in the ANALYZE or NIFTI Format
Description
Usage
Arguments
Details
Value
See Also
Examples
Description
Extract in that order Translation, Rotation, Shear and Scale from a 4x4
(or 3x4) affine matrix from a NIFTI header list (srow.x, srow.y, srow.z).
Usage
1
Arguments
M
the affine matrix
Details
Decomposes M using the convention: M = translation * scale * skew * rotation. Be careful that rotation can be improper.
Value
A list containing Translation, Scale, Shear and Rotation. Rotation decomposition is also provided (rotation = RotZ*RotY*RotX*Ref
where Ref is a Reflexion if the rotation is improper or is Identity if the rotation is proper).
See Also
Examples
1
2
3
L <- f.read.nifti.header(system.file("example-nifti.hdr", package="AnalyzeFMRI"))
M <- rbind(L$srow.x,L$srow.y,L$srow.z)
mat34.to.TRSZ(M)
AnalyzeFMRI documentation built on Oct. 5, 2021, 5:06 p.m.
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Description Usage Arguments Details Value See Also Examples
Description
Extract in that order Translation, Rotation, Shear and Scale from a 4x4 (or 3x4) affine matrix from a NIFTI header list (srow.x, srow.y, srow.z).
Usage
1 |
Arguments
M |
the affine matrix |
Details
Decomposes M using the convention: M = translation * scale * skew * rotation. Be careful that rotation can be improper.
Value
A list containing Translation, Scale, Shear and Rotation. Rotation decomposition is also provided (rotation = RotZ*RotY*RotX*Ref where Ref is a Reflexion if the rotation is improper or is Identity if the rotation is proper).
See Also
Examples
1 2 3 | L <- f.read.nifti.header(system.file("example-nifti.hdr", package="AnalyzeFMRI"))
M <- rbind(L$srow.x,L$srow.y,L$srow.z)
mat34.to.TRSZ(M)
|
R Package Documentation
Browse R Packages
We want your feedback!
Note that we can't provide technical support on individual packages. You should contact the package authors for that.
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