R2Q: Rotation to quaternion
In AnalyzeFMRI: Functions for Analysis of fMRI Datasets Stored in the ANALYZE or 'NIFTI' Format
R2Q R Documentation
Rotation to quaternion
Description
Convert from (proper) rotation matrix to quaternion form.
Usage
R2Q(R,qfac=NULL)
Arguments
R
Rotation matrix
qfac
qfac nifti field. It is pixdim[1]. If NULL, R is transformed to have determinant 1
Value
The quaternion.
See Also
Q2R
Examples
L <- f.read.nifti.header(system.file("example-nifti.hdr", package="AnalyzeFMRI"))
Q <- c(L$quatern.b,L$quatern.c,L$quatern.d)
R <- Q2R(Q,L$pixdim[1])
Q
R2Q(R)
AnalyzeFMRI documentation built on Aug. 8, 2025, 7:16 p.m.
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| R2Q | R Documentation |
Rotation to quaternion
Description
Convert from (proper) rotation matrix to quaternion form.
Usage
R2Q(R,qfac=NULL)Arguments
R |
Rotation matrix |
qfac |
qfac nifti field. It is pixdim[1]. If NULL, R is transformed to have determinant 1 |
Value
The quaternion.
See Also
Q2R
Examples
L <- f.read.nifti.header(system.file("example-nifti.hdr", package="AnalyzeFMRI"))
Q <- c(L$quatern.b,L$quatern.c,L$quatern.d)
R <- Q2R(Q,L$pixdim[1])
Q
R2Q(R)
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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