pmat5::frametwist Interface Reference

Public Member Functions
subroutine	frametwist (xp, yp, zp, xv, yv, zv, twist)
	Given a principal cartesian orthonormal frame, {xp,yp,zp} (i.e., at P with Earth-centered cartesians, zp), and another similar frame {xv,yv,zv} at V with Earth-centered cartesians zv, find the relative rotation angle, "twist" by which the frame at V is rotated in the counterclockwise sense relative to the parallel-transportation of P's frame to V.
subroutine	sframetwist (sxp, syp, szp, sxv, syv, szv, stwist)
	Given a principal cartesian orthonormal frame, {xp,yp,zp} (i.e., at P with Earth-centered cartesians, zp), and another similar frame {xv,yv,zv} at V with Earth-centered cartesians zv, find the relative rotation angle, "twist" by which the frame at V is rotated in the counterclockwise sense relative to the parallel-transportation of P's frame to V.

Detailed Description

Definition at line 46 of file pmat5.f90.

Constructor & Destructor Documentation

frametwist()

subroutine pmat5::frametwist::frametwist	(	real(dp), dimension(3), intent(in)	xp,
		real(dp), dimension(3), intent(in)	yp,
		real(dp), dimension(3), intent(in)	zp,
		real(dp), dimension(3), intent(in)	xv,
		real(dp), dimension(3), intent(in)	yv,
		real(dp), dimension(3), intent(in)	zv,
		real(dp), intent(out)	twist )

Given a principal cartesian orthonormal frame, {xp,yp,zp} (i.e., at P with Earth-centered cartesians, zp), and another similar frame {xv,yv,zv} at V with Earth-centered cartesians zv, find the relative rotation angle, "twist" by which the frame at V is rotated in the counterclockwise sense relative to the parallel-transportation of P's frame to V.

Note that, by symmetry, transposing P and V leads to the opposite twist. Double precision version.

Parameters

[in]	xp	P-frame cartesian X-vector.
[in]	yp	P-frame cartesian Y-vector.
[in]	zp	P-frame cartesian Z-vector.
[in]	xv	V-frame cartesian X-vector.
[in]	yv	V-frame cartesian Y-vector.
[in]	zv	V-frame cartesian Z-vector.
[out]	twist	relative rotation angle (radians) of frames.

Author

R. J. Purser

Definition at line 777 of file pmat5.f90.

Member Function/Subroutine Documentation

sframetwist()

subroutine pmat5::frametwist::sframetwist	(	real(sp), dimension(3), intent(in)	sxp,
		real(sp), dimension(3), intent(in)	syp,
		real(sp), dimension(3), intent(in)	szp,
		real(sp), dimension(3), intent(in)	sxv,
		real(sp), dimension(3), intent(in)	syv,
		real(sp), dimension(3), intent(in)	szv,
		real(sp), intent(out)	stwist )

Given a principal cartesian orthonormal frame, {xp,yp,zp} (i.e., at P with Earth-centered cartesians, zp), and another similar frame {xv,yv,zv} at V with Earth-centered cartesians zv, find the relative rotation angle, "twist" by which the frame at V is rotated in the counterclockwise sense relative to the parallel-transportation of P's frame to V.

Note that, by symmetry, transposing P and V leads to the opposite twist. Single precision version.

Parameters

[in]	sxp	P-frame cartesian X-vector.
[in]	syp	P-frame cartesian Y-vector.
[in]	szp	P-frame cartesian Z-vector.
[in]	sxv	V-frame cartesian X-vector.
[in]	syv	V-frame cartesian Y-vector.
[in]	szv	V-frame cartesian Z-vector.
[out]	stwist	relative rotation angle (radians) of frames.

Author

R. J. Purser

Definition at line 750 of file pmat5.f90.

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The documentation for this interface was generated from the following file:

• /scratch4/NCEPDEV/nems/Brian.Curtis/git/BrianCurtis-NOAA/UFS_UTILS/v1_14_0/sorc/grid_tools.fd/regional_esg_grid.fd/pmat5.f90