ref.add {espadon} | R Documentation |
The ref.add
function adds the transfer matrices from or
to a new frame of reference defined from 2 unit vectors and an origin point.
ref.add(
src.ref,
orientation = c(1, 0, 0, 0, 1, 0),
origin = c(0, 0, 0),
new.ref.pseudo = "newref",
T.MAT = NULL
)
src.ref |
Character string, pseudonym of the frame of reference in which
the |
orientation |
Vector of 6 or 9 elements, composed of the coordinates of the 2 orthonormal vectors (i, j),
or of the 3 orthonormal vectors (i, j, k) of the new coordinate system,
in the |
origin |
Vector of the x, y, z coordinates of the origin point of the
new frame of reference in the |
new.ref.pseudo |
Character string, pseudonym of the new frame of reference to add. |
T.MAT |
"t.mat" class object created by
load.patient.from.dicom, load.patient.from.Rdcm
or load.T.MAT. If |
Returns a "t.mat" class object, which contains the transfer
matrices from or to new.ref.pseudo
pseudonym of the new frame
of reference. If the T.MAT
is NULL
, then the returned object
will contain only 4 matrices: "src.ref<-src.ref", "src.ref<-new.ref.pseudo",
"new.ref.pseudo<- new.ref.pseudo", "new.ref.pseudo<-src.ref".
Returns a NULL
if orientation
is not well defined.
# Adding of the reference frame "ref1_60", which is a 60 degree rotation of
# reference frame "ref1".
orientation <- c (cos (pi / 3), sin (pi / 3), 0,
-sin (pi / 3), cos (pi / 3), 0)
local.Tmat <- ref.add (src.ref = "ref1", orientation = orientation,
new.ref.pseudo = "ref1_60")
str(local.Tmat)