pvu¶
- erfa.pvu(dt, pv)[source]¶
Update a pv-vector.
- Parameters:
- dtdouble array
- pvdouble array
- Returns:
- upvdouble array
Notes
Wraps ERFA function
eraPvu
. The ERFA documentation is:- - - - - - - e r a P v u - - - - - - - Update a pv-vector. Given: dt double time interval pv double[2][3] pv-vector Returned: upv double[2][3] p updated, v unchanged Notes: 1) "Update" means "refer the position component of the vector to a new date dt time units from the existing date". 2) The time units of dt must match those of the velocity. 3) It is permissible for pv and upv to be the same array. Called: eraPpsp p-vector plus scaled p-vector eraCp copy p-vector This revision: 2021 May 11 Copyright (C) 2013-2023, NumFOCUS Foundation. Derived, with permission, from the SOFA library. See notes at end of file.