cspice_eul2xf

 Abstract I/O Examples Particulars Required Reading Version Index_Entries
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#### Abstract

```
CSPICE_EUL2XF computes a state transformation from an Euler angle
factorization of a rotation and the derivatives of those Euler
angles.

For important details concerning this module's function, please refer to
the CSPICE routine eul2xf_c.

```

#### I/O

```
Given:

eulang   a double precision 6-vector of Euler angles corresponding
to the specified factorization

If we represent r as:

r =  [ alpha ]     [ beta ]     [ gamma ]
axisA        axisB         axisC

then :

eulang = alpha
eulang = beta
eulang = gamma
eulang = d(alpha)/dt
eulang = d(beta)/dt
eulang = d(gamma)/dt

axisA
axisB
axisC   the integer code identifying the axes of the Euler
factorization for 'r'

r =  [ alpha ]     [ beta ]     [ gamma ]
axisA        axisB         axisC

The value 1 corresponds to the X axis.
The value 2 corresponds to the Y axis.
The value 3 corresponds to the Z axis.

the call:

cspice_eul2xf, eulang, axisA, axisB, axisC, xform

returns:

xform   a double precision, 6x6 state transformation
matrix in the form

[       |        ]
|  r    |    0   |
|       |        |
|-------+--------|
|       |        |
| dr/dt |    r   |
[       |        ]

where 'r' represents the rotation matrix from frame
'from' into frame 'to', and 'dr/dt' represents the
time derivative of 'r'

cspice_eul2xf inverts the operation of cspice_xf2eul.

```

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None.

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None.

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```
ICY.REQ
ROTATION.REQ

```

#### Version

```
-Icy Version 1.0.1, 09-DEC-2005, EDW (JPL)

Added Examples section.

-Icy Version 1.0.0, 16-JUN-2003, EDW (JPL)

```

#### Index_Entries

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State transformation from Euler angles and derivatives

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`Wed Apr  5 17:58:01 2017`