|
euler_matrix_new
This IDL facility provides a means to generate a 3D rotation Euler
matrix parametrized by three angles and three axes of rotation.
Location in HEALPix directory tree:
src/idl/misc/euler_matrix_new.pro
FORMAT IDL>
matrix = EULER_MATRIX_NEW(a1, a2, a3 [, X=, Y=, ZYX=, DEG=])
QUALIFIERS
-
matrix
- a 3x3 array containing the Euler matrix
-
a1
- input, float scalar,
angle of the first rotation, expressed in radians,
unless DEG (see below) is set
-
a2
- angle of the second rotation, same units as a1
-
a3
- angle of the third rotation, same units as a1
KEYWORDS
-
DEG=
- if set, the angles are in degrees instead of radians
-
X=
- if set, uses the classical mechanics convention (ZXZ):
rotation a1 around original Z axis,
rotation a2 around intermediate X axis,
rotation a3 around final Z axis
(see Goldstein for more details).
default:this convention is used
-
Y=
- if set, uses the quantum mechanics convention (ZYZ):
rotation a1 around original Z axis,
rotation a2 around intermediate Y axis,
rotation a3 around final Z axis.
-
ZYX=
- if set, uses the aeronautics convention (ZYX):
rotation a1 around original Z axis,
rotation a2 around intermediate Y axis,
rotation a3 around final X axis.
DESCRIPTION
![$\textstyle \parbox{\hsize}{\facname \ ~\ allows the generation of a rotation Eu...
...,/Y)) \\ [.2cm]
euler\_matrix\_new(a,b,c,/Z) = euler\_matrix($-$a, b,$-$c,/Z)
}$](idlimg17.png)
RELATED ROUTINESThis section lists the routines related to euler_matrix_new
-
idl
- version 6.1 or more is necessary to run euler_matrix_new.
-
rotate_coord
- apply a rotation to a set of position vectors and
polarization Stokes parameters.
Eric Hivon
2010-06-18
|
|
